Much More Than You Ever Wanted To Know About Tribbles

  Special thanks to David Gerrold, for creating the most popular SciFi
     pet in the Federation, and of course to Gene Roddenberry, for
     creating the Star Trek Universe and making this all possible.

                              CHAPTER ONE
                           WHAT IS A TRIBBLE?

        Tribbles (Tribbeleus Pregnantum) are furry, almost round
  animals, ranging in size from less than 3 to more than 35 cm. They
  have no legs, but are nonetheless able to propel themselves at a
  very reasonable speed. They can and will eat almost anything a
  carbon-based life form can digest, and then some. They do not posses
  eyes, but have other, highly accurate, senses, some of which have
  not been fully explained as of this date.
        The natural tribble is some shade of black, brown, or white,
  but through selective breeding the tribble now comes in almost any
        Tribbles are hermaphrodites and begin reproduction before
  birth, if the parent has enough food reserves built up. They are
  also capable of heterosexual reproduction, which is important for
  variety and evolution in the species. As a matter of fact, a tribble
  will choose a partner if one is available.
        A tribble can reproduce once every 12 hours, with an average
  litter of 10, when fed free choice on a high protein diet, but the
  tribbles kept commonly as pets are genetically altered and can not
        Non-breeding tribbles make good pets because they are clean
  and easy to keep. They are very friendly to almost all humanioids,
  and most other Federation members.


                              CHAPTER TWO
                         ORIGIN OF THE TRIBBLE

        The tribble was first introduced into the Federation by Cyrano
  Jones, s.d. 4523.3, at Deep Space Station K-7. Its origin, however,
  remained unknown until s.d. 8104.6.
        The home world of the tribble is Cardegy II, a hostile planet
  that is mainly desert with little food and several predatory life
  forms. The tribble adapted well to the harsh circumstances; they
  need little food for sustenance, and whenever food is available, as
  will happen after one of the rare rain storms, it reproduces at an
  incredable rate. Only the hardiest specimen are able to live until
  the next rain period. Natural selection has made the tribble a tough
  little creature that has few needs and is unsuseptible to disease
  and injury.
        As tough as the tribble is, and notwithstanding its
  reproductive ability, recent studies have revealed that the tribble
  has been threatened with extinction on its home planet more than
        In recent years, the colonies on Cardegy II have usurped some
  of the desert areas, and climate control has rendered several wide
  spread areas more hospitable, but there are still large areas of
  desert where wild tribbles roam freely.
        Close to the colonized areas, the tribbles sometimes present a
  problem, since the presence of the colonists keeps many predators
  away. There is plenty to eat because of the climat control and the
  refuge of the colonists. The tribbles can form a real plague, and
  several plans are being executed to limit their number.
        Food and refuge is being sprayed with neo-ethylene, preventing
  them from breeding. (See also chapter 5 on the use of neo-ethylene
  in tribbles)
        The Klingons have been able to genetically construct the
  glommer, a tribble predator that looks most like a ball on rather
  high legs. It eats tribbles whole, and works great against the
  rapidly multiplying wild tribbles. The Cardegy colony took over most
  of the breeding stock s.d. 42506.6.
        In addition, Klingons are encouraged to move to the Cardegy
  colony. A tribble that can move around freely will not come near a
  Klingon, thus staying out of any of their recidences.
        Non-Klingon colonists are not always happy with this last
  method, claiming they get more tribbles because of their Klingon
  neighbors, but truth is that less tribbles range in neighborhoods
  with Klingons than in other areas, even if food and shelter
  circumstances would otherwise be more favorable to the tribbles.


                             CHAPTER THREE
                         ANATOMY OF THE TRIBBLE

        The tribble has a thick, muscular skin, which is used to move
  not unlike a small, living tank. A tribble can also start itself
  rolling, and can even climb reasonably well by pulling itself up
  with folds of its skin.
        Directly underneath the skin is a sensory layer, with which
  the tribble feels, hears, smells, and detects wves much like sonar.
        The mouth opening, located at the underside of the tribble,
  can expand greatly to take in large food particles. It ends in a
  'multi-functional tube', which extends through the whole tribble and
  serves as an esophagus, trachea, and birth canal.
        The stomach is a large digestive sack, in which almost
  anything can be completely digested and absorbed. In cast a tribble
  swallows something that can not be digested, it can be excreted
  through the multi-functional tube.
        The liver, gall bladder, and the two digestive glands which
  are unique to the tribble and play a large role in its enormeous
  digestive capabilities, empty right into the stomach.
        Circulation takes place by the pumping of a blood-like
  substance through ducts to the walls of the various organs. In the
  organ walls it flows freely, and the oxygen is released in an
  exchange involving a substance found only in tribbles, called Trey's
  fluid, after the Earth biologist who discovered it. Only in the
  lungs is there a similarity with the alveoli found in most higher
  oxygen breathing life forms. Its hart, though muscular, is small, as
  are all organs apart from stomach and uterus, taking a little of the
  available space as possible.
        Half the tribble is uterus. Because of its relatively large
  size, the uterus is divided in smaller cavities. This facilitates
  transport of oxygen and nutrients to the embryos.
        Ripened eggs and sperm are released immediatly into the
  uterus. In case of heterosexual fertilization, eggs and sperm of
  both tribbles are mixed in the process. Thus, some eggs will be
  fertilized by the other tribble's sperm, and some by its own.
  Still, a larger percentage of offspring will usually be the result
  of the crossing.
        A tribble has no skeleton as we know it, but the skin is so
  thick and tough that it acts as an exoskeleton.


                              CHAPTER FOUR
                        GENETICS OF THE TRIBBLE

        Tribbles are hermophrodites -both male and female in one
  individual. This means that, unlike an amoeba, which splits itself,
  producing an exact clone, fertilization does take place, and a
  limited gene pool is available. Still, tribbles will inter-breed
  whenever possible.
        The most important factor in selection and breeding of wild
  tribbles is reproductive capability, but in the tribble used as pet
  the size, color, and hair coat are valued higher.
        The natural colors of the tribble range from black, brown,
  gray and white to almost yellow, in solid, spotted, and roan.
  However, through selective breeding and the more controversial
  genetic engineering, breeders have come up with tribbles of more
  exotic colors: green, blue, yellow, red and even leopard.
        True white is dominant, then black, and roughly down to
  lighter and lighter with cream and light yellow being the most
  recessive natural colors in tribbles. Spotted is dominant over
  solid, roan is co-dominant, and leopard is recessive to all.
        Many colors will be co-dominant to some extend, so a black
  crossed with a natural red will produce some offspring with a more
  liver-color, or deep brown-red, rather than just pure black
        Genes are identified for true white, black, brown, grey, red
  and cream, these are often called 'true' colors; liver, mouse-grey,
  dark red (bay) and infinite other shades are various combinations of
  'true' colors, working together to produce that certain shade.
        Natural colors tend to be dominant even over darker exotic
  colors. The exception is albino, which is naturally occurring, but
  is recessive to all other colors. The reason for this is that albino
  is not a real color, but rather an absence of color. Thus, as soon
  as any color does come into the picture, the tribble will not be an
  albino but instead show that color.
        Albino tribbles are rare but can hardly be discerned from true
  white tribbles. An albino will throw no color when
  self-fertilization has taken place, while a true white will throw a
  variety of colors. With non-breeding tribbles there is no way to
  tell unless the parent is known.
        It is of course possible to ascertain the exact genotype of
  any tribble in a well-equiped laboratory, but unless there is a
  special reason for it, like the breeding of a new color, the time
  and cost involved are not worth it.
        The tribbles sold as pets are all genetically altered and do
  not breed. The exact process is too complicated to elaborate on at
  this time, but for those interested I would recommend "Genetics and
  Reproduction in Tribbles", by Drs. Prahyr & Taylor, Rigel IV, s.d.


                              CHAPTER FIVE
                             TRIBBLE BREEDS

        A tribble is a miniature when it is less than 5 cm when fully
  grown. Tribbles don't necessarily stop growing when mature; an
  underfed tribble can grow larger when fed adequately, even though it
  often won't reach its full potential.
        Because in showing and selling miniatures the smallest
  specimen are the most desirable, some breeders will deliberately
  underfeed their tribbles. However, an experienced tribble-keeper can
  easily diagnose underfeeding by the loose skin, dull hair color, and
  in severe cases, lethargic behavior of the tribble. When deliberate
  underfeeding has been discovered it will lead to expulsion of all
  the offender's animals from the show and a warning from the UFPTSBA.
  Repeat offenders can be expelled from all shows and have their
  breeder's licence revoked. First-time buyers are recommended to take
  an expert along when purchasing a miniature.
        Because miniatures are relatively rare, all but the largest
  shows will not split classes in color or hair lenght. All coats and
  colors occur in miniature tribbles.

        This is the tribble most people keep. They are between 5 and
  25 cm. Because there are so many tribbles in this category they are
  divided into subgroups.

  A) Longhair tribbles. A tribble is called a longhair if it has fur
   of 2 1/2 cm or longer. The hair should stand up fluffy and not be
   tangled or matted. Spotted and leopard tribbles with long hair are
   extremely rare.
  B) Roughhair tribbles. A roughhair tribble has hair of up to about
   2 1/2 cm long. Most have many swirls in their coat. When groomed,
   the hair looks fluffy, when left alone it curls lightly in all
   directions. This is the natural hair coat of the tribble.
  C) Shorthair tribbles. Shorthair tribbles have a short, smooth
   hair coat which should lay down in one direction. They are the
   easiest tribble to groom and keep clean. Most spotted and leopard
   tribbles are shorthaired.

        A giant tribble is over 25 cm. All colors and coats occur in
  giant tribbles, but due to the rarity of giant tribbles most shows
  will have one class, as with the miniatures.
        The giant tribbles should not be confused with the tribble
  colonies, which look like giant tribbles but are clusters of little
        A tribble colony is an incorrectly sterilized tribble which
  does not grow by itself, but instead multiplies and forms a colony
  with its offspring, appearing to be one giant specimen. The largest
  tribble colony observed till date was approximately 1m40 across,
  with a weight of over 230 kilograms.
        A tribble colony will break down into its individual units
  when given a shot of neo-ethylene. The resulting individual specimen
  will be safe, non-breeding tribbles.
        Neo-ethylene can also be used to suppress the ability to breed
  in a tribble that has not been genetically altered, but as it wears
  off in time, it is not a reliable method for house-hold use.
  Breeders do not use it, as the first litter after a neo-ethylene
  treatment is usually small in number and the young tribbles are also
  less likely to be show material. It is used, however, to controll
  tribbles in the wild.

        Some breeders have tried cross-breeding tribbles with various
  other life forms, attempting primarily to come up with something
  that has the shape, size and disposition of a tribble, but breeds
  like the other life form.
        This effort has met with some resistance, not in the least
  from those who fear they might end up with something the shape, size
  and disposition of the other life form, that breeds like a tribble!
        So far, none of the attempts have been successful, since a
  tribble will not breed with any other life form voluntarily, and its
  self-fertilizing mechanism is powerful enough to override any attempt
  at forced cross-fertilization, leaving absolutely no room for


                              CHAPTER SIX
                        CARE OF THE PET TRIBBLE

        Genetically altered tribbles make great pets. They are soft,
  gentle and relatively easy to care for. They are great for kids, but
  adults will also benefit from the calming influence a tribble
  appears to have on most humanoid life forms. (Excepting, of course,
        In their natural environment tribbles hardly live to the age
  of 3-5 years due to the many hazards, however, the life span of a
  domesticated tribble can extend to 20-30 years.

        A tribble is curious and always looking for food. They are
  excellent escape artists, and should be kept in a securily locked
  cage. Tribles won't run off when well cared for, but they will wreak
  havok in the kitchen, and the kitchen of the neighbors, as well,
  when allowed to roam free. They like warm places like chairs, so
  risk being sat on when loose.
        The cage should be kept clean and dry. A tribble uses grain
  and grain products with almost a 100% efficiency, so the cage rarely
  needs cleaning. However, if the tribble is fed other things, like
  table scraps and food with a high fat content, it will excrete waste
  products, and the cage will need to be cleaned more often.

        A tribble can digest anything a carbon-based life form can,
  and then some. They have an enormeous appetite, being mostly a
  fur-covered digestive and reproductive system. To keep a tribble
  healthy, however, it should be fed on a low-energy grain, with raw
  vegetables as source for vitamines and for variety.
        There are several good grain mixtures on the market, specially
  formulated for either breeding, non-breeding, and show tribbles.
  Supplements can be given to show tribbles to get the most out of
  their hair coat, or to give underfed tribbles a quick boost, but
  they are not necessary for a healthy, non-showing tribble.
        A tribble fed on a high-energy, high-protein diet will become
  fat, sullen, and its coat will look dull. Therefore, non-breeding
  tribbles should not be fed the high yield feeds designed for
  breeding tribbles, nor should tribbles be fed too many table scraps
  and sweets.
        A tribble does not need to drink when fed on mostly proteins
  and sugars, but especially when fed on fatty food, or anything high
  in salts, will need some water for the waste excretion process. Be
  sure a small container of fresh water is available in case the
  tribble wants it, but do not worry if the tribble does not appear to
  use any of it -a tribble will know when it needs the water and when
  it does not.

        A tribble likes attention. It loves to be petted, or to just
  sit on your desk. It likes most humanoids, but despises Klingons,
  since it is highly allergic to the pheremones a Klingon gives off
  when active or angry.
        Tribbles are easy to handle and will purr when content. Even
  though their mouth opening is strong, a tribble has never been known
  to bite. It is possible a tribble might bite a Klingon, but there is
  no record of one holding a tribble long enough to find out.
        Kids love tribbles because they are small, soft, and gentle.
  Younger kids must be taught to put the tribble back in its cage, so
  the parents won't find it in the food replicator.
        If a tribble accidently gets pinched or otherwise is handled
  roughly, it will emit a high shriek, usually loud enough to make
  anyone let go.
        A tribble likes to be brushed and its coat should be kept
  untangled, but because tribble hair grows slow, they should be
  brushed gently and not too often.
        Tribbles do not like water and should not normally be bathed.
  When thrown in water they will float, and can even propel themselves
  somewhat, but they will avoid all that is wet whenever possible. If
  it becomes necessary to wash a tribble, a sonic shower is preferable.
  If one is not available, the tribble should be dried with a soft,
  dry towel, or be blow-dried.

        Tribbles can be taught simple tricks by gently coaxing it in
  the desired direction and rewarding it with a small treat of high
  yield grain or a sweet.
        They quickly learn to come when called, or to squeak at some
  things and purr at others. A tribble will also rapidly learn its way
  through a maze, or recogize certain sounds and smells.


                             CHAPTER SEVEN
                         DISEASES AND TREATMENT

        Tribbles are not susceptible to many diseases, since they had
  to be extremely hardy to merely survive in their original habitat.
  However, there are a few diseases and other problems that the
  tribble owner should be aware of.

        You can tell a tribble is sick by its behavior. It will be
  very slow, sullen, and even lethargic.
        Physical signs are a dull coat, loose skin, and a general
  'sloppy' look.
        If your tribble ever goes off its feed, call a vet

        Longhaired tribbles are more likely to have a skin or coat
  problem that shorthaired specimen, simply because there is more hair
  for the vermin to hide in.
        If your tribble is loosing its hair, and its skin is slightly
  flaky, dandruff might be the cause. Dandruff is easily cured by
  washing the tribble in lukewarm water with a gentle anti dandruff
  shampoo. Always use lukewarm water, and dry the tribble immediately.
  Because the signs of dandruff are much like the first signs of
  summer itch, inexperienced tribble keepers should consult a vet.
        Summer itch looks much like dandruff at the onset, but the
  flaking will soon become much more profound, and is usually located
  in a few area's only. Washing the tribble will not help, but the vet
  can give a lotion to be rubbed on the flaky spots once a day until
  the flaking stops.
        A tribble is not preferred by lice or fleas, but if other
  animals in the household are infested, the tribble will probably
  pick some up as well. Anti-flea products for cats are safe for use
  on tribbles, but dog products should not be used. Always treat all
  animals in the household at the same time, and treat their cages,
  sleeping places, and favorite hide-outs as well.
        Regular ticks can not penetrate the muscular layer underneath
  the skin, but the Bahner ticks in the Zehnar sector, and particularly
  those on Deneb III, can. Remove with alcohol and tweezers as you
  would any tick from any life form.
        A tribble that is groomed too often will get bald spots, since
  tribble hair grows very slowly. Gentle grooming, with a
  large-toothed comb will work preventive in coat problems, but, as
  with everything, too much is never right.
        Never leave foreign objects entangled in your tribbles hair
  (like a burr or a Symenn-his-hair-tangled). They can be removed
  using coat conditioner or regular baby oil to slicken the hair and
  prevent it from being pulled out.

        Tribbles can get a cold if they get wet and are not dried
  properly. They will not easily drown, but they hate water. They can
  be dried with a soft, dry towel, a blow dryer, or in a sonic shower.
  Tribbles are more susceptible to colds because their native planet
  is so dry and warm that a wet tribble in a draft has little natural
  defenses against it.
        A cold is diagnosed by the tribble showing the general
  symptoms of disease, as well as a sniffing sound, which the tribble
  produces when foreign particles are excreted through the
  multi-functional canal.
        You might also notice a coughing noise, which is produced when
  large amounts of air are being blown out of the multi-functional
  tube, and it closes with a pop. This is common when the tribble
  inhales dust or other foreign particles, and in and of itself not
  something to worry about, but if it persists for any length of time
  it could be a sign of a cold or even pneunomia.
        A tribble with a cold should be kept warm, and given adequate
  food -which means a breeding tribble with a cold is often better
  sterilized unless particularly valuable. The tribble should be taken
  away from the other tribbles and kept in isolation until all signs
  of illness are gone.
        If a cold is allowed to escalate, a tribble might catch
  pneunomia. Pneunomia in a tribble should always be treated by a
  veterinarian. The tribble must be isolated and given anti-biotics.
        Tribbles can be allergic to some substances, but will usually
  know how to avoid them. This is why a tribble will avoid a Klingon
  at all cost; the tribble is allergic to the specific pheremones a
  Klingon excretes when he is either scared, highly active, or angry.
  As Klingons don't like tribbles, they get angry when one is near,
  and will excrete plenty of such pheremones.

        There are few things that are poisenous to a tribble, and the
  tribble will know how to avoid most of them. Those substances that
  have no smell or taste of course are difficult to avoid, so the
  tribble should not have access to them. If poisoning is suspected,
  take the substance, residue, or container with you and take the
  tribble to the nearest vet office immediately.
        All normal food substances carbon-based life forms can digest
  are safe for tribbles, but they can be slightly uncomfortable after
  eating large quantities of food high in fat. Take the fatty food
  away from the tribble and make sure it has some water to help in the
  process of excreting waste.
        Over-eating is common in non-breeding tribbles. If it is only
  an incident, the tribble might appear somewhat uncomfortable, but no
  harm will come of it. A tribble that gets fed too much on a regular
  basis will get fat, become sluggish, and its coat will loose its
        Loss of appetite is unusual and very serious. If a tribble
  ever refuses to eat, do not try to doctor on it yourself, but call a
  vet immediately. The cause could be poison, or it might be a symptom
  of another, serious disease, like pneunomia.

        There are not many diseases of the reproductive system in
  tribbles. One of the few things you might find in domestic tribbles
  is inflamation of the uterus. Inflamation of the uterus is most
  often caused by inducing abortion in a pregnant tribble. This can be
  done, but must always be followed up by a cure of antibiotica. When
  diagnoosed in an early stage, inflamation of the uterus can be cured
  by a longer cure of antibiotica, but when further advanced the inner
  walls will all be affected and the tribble willhave to be put down.
        Spontaneous abortions are almost unheard of in tribbles, and
  if it ever occurs, it is a sure sign of a serious problem. Call a
  veterinarian immediately.


                             CHAPTER EIGHT
                             TRIBBLE SHOWS

        All major tribble organizations within the Federation hold
  shows, where owners of tribbles compete for ribbons, awards, and
  even money.
        Any healthy tribble is eligible for entrance in the shows, but
  the owner must be a member of one of the tribble organizations, and
  an NTBC (Non-Breeding Tribble Certificate) is required.
        Breeding tribbles have their own shows, which is usually an
  excellent place to find a good, healthy tribble. Breeders will
  usually have several 'safe' tribbles with them as well, for showing
  requirements and for sale. At larger shows, there might even be an
  auction of breeding and non-breeding tribbles.
        Most shows are divided in the following classes:
                -Miniatures, all colors, all coats.
                -regular tribbles, short haired.
                -regular tribbles, rough haired.
                -regular tribbles, long haired.
                -giant tribbles, all colors, all coats.
                -natural colored tribbles.
                -exotic colored tribbles.
                -grand and reserve champion, choosen from the first
                 and second places in each class.
        A tribble can be entered in more than one class if the judging
  schedule permits. For example, a shorthair, blue regular can be
  entered in the regular, short haired, class as well as in the exotic
  colored class.
        Tribbles are judged on general health, condition, size
  according to breed and age, brightness of color, and texture and
  condition of hair coat. Breeding tribbles are also judged on health,
  number, color and size of offspring. (Breeders should bring a recent
  litter along with the parent to compete in any class)
        Any tribble association can provide information on local
  shows, dates, and specific requirements, if any.


                              CHAPTER NINE

  -It is against Federation law to keep a breeding tribble without a
   valid breeders' licence and a current membership in one of the
   tribble associations.
  -Tribbles may not be sold, traded, or otherwise change owner without
   a Non-Breeding Tribble Certificate (NBTC). The NBTC should be
   complete, including some hair as a DNA sample. Breeding tribbles
   may only be sold to and by individuals with a valid breeder's
   licence and a current membership in one of the tribble
  -A non-breeding tribble, accompanied by an NTBC, may be transported
   within the Federation. However, some planets have their own local
   laws pertaining tribbles, and not all Captains allow tribbles
   aboard their vessels, so it is necessary to make inquiries before
   taking a tribble on a move or vacation.
  -A breeding tribble is considered a potentially harmful life form,
   and the owner carries certain responsibilities as to the safety and
   prevention of escape. Licenced individuals are allowed to travel
   with a breeding tribble, but many ships and planets have their own
   laws and rules here, as well.
  -Any breeding tribble must be kept in an enclosed environment
   conformed to a set of standards as to safety and prevention of
  -Tribbles are not susceptible to manydiseases, but as any life form,
   they are possible carriers of such. Some planets require health
   certificates, tests, and/or quarantaine, as do some ship's
   Captains. Here again, it is a good idea to check before taking your
   tribble along.
  -It is forbidden for a Klingon to own a live tribble. The Humane
   Society has ruled it would be extremely stressful for the tribble.
   As it would also be rather stressful for the Klingon, many feel
   this regulation superfluous.
  -And of course under no circumstances should a live tribble be taken
   into the Klingon empire.


                              CHAPTER TEN
                            BREEDING LICENSE

        To be able to breed tribbles within the Federation, it is
  required to have a license and be a member of the United Federation
  Tribble Show and Breeder's Association, or one of the connected
        To obtain a tribble breeder's license, it is required to pass
  a test. The test consists of two parts, a written test and a
  practical exam.
        The written test includes the following topics:
                -Tribble breeds and colors.
                -Housing and care.
                -Diseases and treatment.
                -History of the tribble.
                -Laws and rules pertaining to tribbles, including
                 local laws.
                -Theories of genetic engineering.
                -Genetics and cross-breeding.
                -Adjustment of feeding ratios for maintenance and
        The practical exam includes the following:
                -Tribble feeding.
                -Tribble grooming and care.
                -Genetic alteration.
                -Recognition of breeds and colors.
        Keep in mind that the number of tribble breeders is kept very
  limited due to the enormeous fertility of the tribble.


                             CHAPTER ELEVEN
                           BREEDING TRIBBLES

        The average breeding farm has about 50-75 breeding tribbles,
  most of which are kept on a carefully balanced ratio that maintains
  the tribble without discomfort but leaves not room for reproduction.
        When a litter is desired, the breeder selects the tribbles he
  wants to breed and places them in a breeding cage.
        An exact measurement of food is given, as the breeder usually
  will want to get a litter only from the selected tribbles, and not
  an immediate litter from the youngsters, as well. This is done by
  making sure the parent tribbles get exactly enough food for one
  litter, and one litter only. This way, there will not be enough
  nutrients for the youngsters to be born pregnant, as is the case in
  tribbles when the parent animals have been fed free choice.
        When fed too much, the youngsters will be pregnant, even if
  the litters will be small if the over-feeding was little. When fed
  too little, the two planned litters will be small, yielding smaller
  offspring which is seldom show quality.
        After 10-12 hours, the tribbles are fed on a normal ratio
  again, also to assure no more than one litter is obtained.
        After 12-14 hours the litter can be expected. The average
  litter is about 10 youngsters. The youngsters are immediately
  rendered safe by genetically altering, or selected for further
  breeding and put on a growth - but not breeding - ratio.
        It takes much practice to balance the feed ratios in such a
  manner as to not starve the tribbles, or interfere with their
  growth, while staying low enough as to prevent reproduction. The
  margins might be as small as 2 mg. per tribble per day in
        Less experienced tribble breeders, afraid to over-feed their
  tribbles, often underfeed their breeding stock, but his leads to
  smaller tribbles with dull hair and shabby coats.
        Once the youngsters which have not been selected for further
  breeding have been genetically altered, they are seperated from the
  breeding stock and are fed more freely on a special growth mixture
  of grain. They are registered and given an NTBC.


                             CHAPTER TWELVE
                        OTHER USES FOR TRIBBLES

        With its high reproduction rate, tribbles have great potential
  for various other purposes than just pets.
        The tribble has been used in various cultures as a food and
  fur source, but with the wide-spread use of the replicator most
  Federation cultures have almost entirely done away with the usage of
  live animals for either. Also, the large number of breeding tribbles
  that would be kept on a fur or meat farm would create an emormeous
  environmental hazard.
        Tribbles have been used as test animals, when poisoning was
  suspected. However, modern equipment can do the same task much
  better, for there are many substances which are poisonous to
  humanoids, but harmless to tribbles.
        Before the alliance between the Federation and the Klingon
  empire, tribbles were frequently used to sniff out spies. It was not
  unusual for Customs at a large starbase to have a tribble in
  addition to the sophisticated scanning systems. It is not unlikely
  that worlds outside the Federation, which have no treaty with the
  Klingons, do still use tribbles for this purpose.
        Tribbles could, of course, be used as a weapon, when released
  in large numbers in an agricultural area. This is one of the reasons
  why the selection of breeders is so precise, and why it is so hard
  to get a permit for transport of a breeding tribble. So far, the
  tribble has never been used in this manner.


                            CHAPTER THIRTEEN
                           HELPFULL ADDRESSES

        This is a listing of some of the larger organizations within
  the Federation, and some that were especially helpful in creating
  this publication. It would not be possible to print a list of all
  tribble organizations in this book, but if no organization in your
  sector is listed, the UFPTSBA can direct you to organizations in
  your area. They also have limited information on tribble
  organizations outside the Federation.

  United Federation of Planets Tribble Show and Breeder's Association
  Code 679340-CKBF-346
  Sherman's Planet

  Bajoran Tribble Association
  Code 836124-TVLK-816

  Betazed Tribble Breeders
  Code 689082-TTOS-149

  Earth Tribble Breeder's Association
  Code 001434-DKQX-960
  Sol III

  Tribble Breeders of Rigel
  Code 743148-AXHP-1744
  Rigel IV

  Tribble Breeders Sector 18
  Code 118332-XBDL-0893
  Starbase 495

  Vulcan Tribble Breeders
  Code 020186-CARE-7351


                            CHAPTER FOURTEEN

  Beshar, Tonio. "Care and Feeding of the Pet Tribble", Magna III,

  Captain's log, USS Enterprise, Capt. James T. Kirk recording, USS
  Enterprise, 4523.2/8.4

  Cashy, Wanda. "The Tribble in Art and Literature", Shehyvan, 32654.0

  Eliah, Darvo. "Teaching Tricks to Small Pets", Taurus I, 39821.6

  Gerrold, David. "The trouble with Tribbles", Sol III, 7305.4

  Gerrold, David. "More Tribbles, More Troubles", Sol III, 7306.10

  Heinstein, Theodore Hans von. "Breeding Color in Tribbles", Sparrjae
  IV, 25438.7

  Prahyr, Dr. K. and Taylor, Dr. V. R. "Genetics and Reproduction in
  Tribbles", Rigel IV, 25013.6

  Roelof, Dr. Wayne. "Diseases in Federation Pets", Sol III, 40004.7

  Tasis, Vynja. "Showing Your Tribble", leaflet, Starbase 66, 41031.8


Since Dec 4, 1999

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