Difference between revisions of "AY Honors/Small Mammal Pets/Answer Key"

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{{Taxobox
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[[Image:54986main_mouse_med.jpg|thumb|270px|right|White fancy mouse]]
| color = pink
 
| name = Dwarf Winter White Russian Hamster
 
| image = Phodopus sungorus 2 - Colour corrected.jpg
 
| image_width = 250px
 
| regnum = [[Animal]]ia
 
| phylum = [[Chordate|Chordata]]
 
| classis = [[Mammal]]ia
 
| ordo = [[Rodent]]ia
 
| subordo = [[Myomorpha]]
 
| superfamilia = [[Muroidea]]
 
| familia = [[Cricetidae]]
 
| subfamilia = [[Cricetinae]]
 
| genus = ''[[Phodopus]]''
 
| species = '''''P. sungorus'''''
 
| binomial = ''Phodopus sungorus''
 
| subdivision_ranks = Subspecies
 
| subdivision =
 
''Phodopus sungorus sungorus''
 
(see text)
 
}}
 
'''Winter White Russian hamsters''' are a species of [[Hamster]] in the genus ''[[Phodopus]]''.  They are typically half the size of the better-known [[Golden Hamster|Syrian hamster]], and therefore called dwarf hamsters along with all ''Phodopus'' species. Features include a typically thick poopy dark gray dorsal stripe and furry feet. The tail is so short that it hardly shows when the hamster is sitting. As winter approaches and the days get shorter, Winter Whites'fat dark fur greys until it is almost completely white (hence the name). In the wild, this adaptation helps them evade predators in the snow covered Steppes of winter. They live mainly in [[Siberia]] and are also found in [[Dzungaria]], [[Kazakhstan]], [[Mongolia]] and [[Manchuria]].
 
  
Up until recently, it was debated whether the Winter White hamster was a [[sub-species]] of the [[Campbell's dwarf hamster|Campbell's]] (''Phodopus campbelli'') or not; however, it is now known that the Winter whites are of their own species, ''Phodopus sungorus''.
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'''Fancy mice''' ("fancy", in this context, means "hobby") are domesticated versions of the common or house mouse (''[[Mus musculus]]'').
  
==Winter White Russian hamsters as pets==
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==Physical description==
They are often found on the [[pet]] market, in [[Europe]] and [[Asia]] more so than in the [[United States|U.S.]]. They are rarely found in pet stores in [[Canada]]. Care is similar to that of the [[Campbell's dwarf hamster|Campbell's dwarf hamster]]. Winter White hamsters generally make excellent pets.  However, a larger [[Golden Hamster|Syrian Hamster]] would be more suitable for younger children as they can be handled more clumsily. Winter White hamsters should not be fed food containing sources of [[monosaccharide]]s because of the risk of developing [[diabetes mellitus]]{{Fact|date=February 2007}}.
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Fancy mice is a term to describe mice that have been selectively bred for pet or for show. They can vary greatly in size, from small pet mice that are approximately 16-18 cm (6 inches or so) long from nose to the tip of the tail, to show mice that measure 30cm (12 inches) nose to tail. Pet mice weigh about 25-40 g but large show mice can weigh up to 100g. As fancy mice have a different process of [[natural selection]] than their wild cousins, they come in a variety of colours and patterns. These include black, chocolate, blue, white, cream, lilac, red, fawn, champagne, cinnamon, golden agouti, silver agouti, silver and dove. Female mice are called does and males are called bucks. If well cared for, a mouse lives for around 2 years on average, with some reaching 3 years old.
  
Winter Whites, in common with the [[Campbell's dwarf hamster|Campbell's Dwarf Hamster]] are sociable and will live together peacefully with others of their own species, but are best introduced at a young age and will require a sufficiently large cage to ensure they live together happily.
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==Mice as pets==
 +
[[Image:Fancy Mouse.jpg|thumb|left|A tame black fancy mouse]]
 +
Mice are kept as pets in many countries for a number of reasons. Fancy mice are small, inexpensive, relatively clean, and generally have a good [[temperament]]. Female mice are popular with many owners since they tend to cohabitate with other mice better than males. Additionally, the urine of female fancy mice does not contain as strong of an odor as that of the male mice. Bucks can fight with each other, unless they are introduced at a very young age, and they produce urine with a strong, musky smell. Some people, however, prefer the personality and curiosity of male mice. It is a good idea to keep fancy mice in groups of at least two if possible, as mice are sociable animals. However, if a buck and a doe of breeding age are put in the same cage they will produce a new litter every three weeks until separated.
  
In general, dwarf hamsters typically have more of a family structure than the [[Golden Hamster|Syrian Hamster]]. Conventional beliefs that dwarf hamsters will happily live in mated pairs, with both male and female caring for the young. However, this may be a result of a frequent confusion of the Winter Whites and the Campbell's hamsters.  Current research work suggest biparental care in Campbell's hamsters (Phodopus campbelli) but not in Winter Whites (Phodopus sungorus) (see research work by Dr. Katherine Wynne-Edwards at Queen's University, Ontario, Canada). Some report that same-sex pairs and larger groups don't always get along well and frequent fighting may occur and be a great distress for them, or even lead to deadly incidents.
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==Caging==
 +
Mice should be kept in well-ventilated areas. Fish tanks or cages with bars and plastic flooring make good housing. Give attention that the distance between the bars is under 9mm. It is a problem for young mice to force themselves through a cage with wider bars, and it's dangerous when they get stuck there.  
  
There are several phases (colorations) of Winter White hamsters: their normal (dark brownish-grey colouring) or sapphire (blue-grey colouring). A white pattern called pearl (white with coloured hairs) sometimes exists in either phase, producing the normal pearl or sapphire pearl forms. However, these colours may be difficult to find, and the range of colours is much narrower than in the case of the [[Campbell's dwarf hamster|Campbell's]].
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The best products for in-cage bedding are aspen wood shavings or a commercial paper-based material. Despite popular belief, mice can be given newspaper for nesting, as the ink is soy based and nontoxic. They should not be given [[cedar|cedar shavings]], as the oils in the wood are unhealthy. Small hide-aways and toys (such as a [[cardboard]] tube) are good to have in the cage. Commercial toys are also available.
  
Winter White hamsters, also called Siberian hamsters, come from the steppes of Siberia and Kazakhstan and possess an adaptation not seen in [[Campbell's dwarf hamster|Campbells]]: they can moult into a white winter coat.  This camouflages them against the snow and also gives them their name.  This moulting is brought on by the amount of day light; if the hamster is kept in an environment with short duration of day light (< 12 hours of light/day) for more than 6 weeks, they will change into their winter coat (white guard hair with thick inner hair) with only a single black stripe going through the center of the back.  Such seasonal moulting is mediated through the nocturnal secretion of melatonin, the hormone secreted by the pineal gland.  Short day lengths also triggers the regression of the gonads in both male and females, and thus Winter Whites become infertile.  Because Winter White hamsters show such photoperiodic and seasonal changes in physiology and various behaviors, it is also used as a research model system for studying seasonality and photoperiodism.
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[[Cat]] owners must also take special precautions to ensure that the mouse's housing is secure, as even the friendliest of domestic cats have been known to torment, kill and eat fancy mice if given the chance.
  
The average lifespan of the Dwarf Winter White Russian Hamster is to 2 years, although they can live longer.
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==Feeding==
 +
Food for fancy mice is relatively inexpensive. [[Veterinarian]]s generally recommend a product called [[lab block]], a scientifically-formulated blend originally designed for mice in laboratories. Dry [[dog food]] is another good option when lab block is unavailable, as it offers balanced nutrition for a mouse and helps keep their teeth conditioned. Special mouse food found in pet stores also makes a good diet. In order to keep variety in their diets, mice can also eat oats, oily seeds, clean [[egg shell]], breakfast cereal, and [[stale bread]]. Fruit and vegetables can be offered occasionally. They should also have clean water at all times and some sort of chewing wood in order to keep their teeth from growing too long. Wood found outdoors may not be safe, but many products are available from pet stores to satisfy the chewing instinct.
  
<gallery>
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==Breeding mice==
Image:Pearl Winter White Russian Dwarf Hamster - Front.jpg|Pearl Winter White - Front
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It is important to consider [[breeding]] carefully and thoughtfully due to the rapid reproduction rate of mice. Adequate housing for the young should be available.  
Image:Pearl Winter White Russian Dwarf Hamster - Side.jpg|Pearl Winter White - Side
 
Image:Pearl Winter White Russian Dwarf Hamster - Rear.jpg|Pearl Winter White - Rear
 
Image:Pearl Winter White Russian Dwarf Hamster - Face.jpg|Pearl Winter White - Face
 
</gallery>
 
  
[[Image:Phodopus_sungorus.jpg|thumb|right|250px|Dwarf Winter White Russian Hamster, normal color]]
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Female mice should not be bred before 12 weeks or after 8 months; doing so can be very dangerous, and some mice can die while giving birth. Bucks and does should be housed in separate enclosures until breeding is desired, at which point they can be placed together. The doe should be placed in the buck's enclosure, otherwise the doe will fight with the buck to defend her territory. Does come into [[estrus|heat]] around every five days, so the pair can be kept together for up to ten days.
 +
 +
[[Image:Mice 24 Nov 2004.jpg|thumb|Baby Mice.]]
  
== Campbells/Winter White Hybrids ==
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A pregnant mouse will grow very round near the time of birth. The [[gestation]] period is approximately 18 to 21 days. Typical [[litter (animal)|litter]] size is 4 to 12 young, though it can be less or more. It is best to remove the buck otherwise he will mate with the female as soon as the first litter is born, putting a huge strain on the mother, the unborn litter, and the new babies.
  
Of the 5 species kept as pets only the [[Campbell's dwarf hamster|Campbells]] and Winter Whites are able to interbreed and produce live offspring (hybrids). Hybrids are most often unknowingly produced through incorrect identification of the two similar species of hamsters and unfortunately the number of hybrids is increasing particularly within pet shops in many countries today where they are often mislabelled as being one or other of the pure species.
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Baby mice, also called [[pup]]s, are born [[Blindness|blind]], naked, and [[deaf]]. Their eyes are closed and their ears are stuck to the sides of their heads. After giving birth the mother should be left alone for a while, otherwise she might panic and eat the pups. She might also eat any [[dead]] or sickly offspring.  
  
Although hybrids make suitable pets the breeding of hybrids should be avoided as it can cause health and birthing problems and also the widespread breeding and distribution of hybrids could threaten the existence of both pure species in captivity. Therefore if intending to breed Russian hamsters it is important to ensure that both hamsters being bred are a pure form of, and of the same, species to avoid producing hybrids.
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Pups begin to grow hair at two to four days. Ears open at three to five days, and the pups will start [[vocalization|vocalizing]]. Eyes open at 14 days, and the babies will start exploring the world around them. At three weeks old they look like miniature versions of adult mice. At four to five weeks the pups should be separated from each other, otherwise they will breed with their siblings.
  
== External links ==
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==Mice clubs==
 +
Many fancy mice clubs have been set up around the globe. Shows are also held so owners can display their mice, where they are judged on color and behavior.
  
*[http://www.petwebsite.com/hamsters/dwarf_winter_white_russian_hamsters.htm Pet Web Site (formerly The Complete Hamster Site) section on Dwarf Winter White Russian Hamsters]
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==External links==
*[http://www.petwebsite.com/hamsters/hybrid_hamsters.htm Pet Web Site (formerly The Complete Hamster Site) section on Hybrid Hamsters]
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*[http://www.fancymice.info Fancy Mice]
*[http://www.hamster-heaven.com Hamster Heaven]
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*[http://www.rmca.org Rat & Mouse Club of America]
*[http://www.xander.it/video.htm Xander.it] - Winter White video gallery
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*[http://www.miceandrats.com/miceas.htm Mice as Pets]
*[http://www.furrycritters.co.uk FurryCritters]
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*Varieties of [http://www.miceandrats.com/standmic.htm Fancy Mice]
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*[http://www.nationalmouseclub.co.uk National Mouse Club]
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*[http://www.dmrm.de Mouse Club of Germany]
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*[http://www.svemus.org Swedish Mouse Club]
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*[http://mus.ifokus.se Swedish Mouse Community]
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*[http://midwestmouseclub.org Midwest Mouse Club (US)]
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*[http://pzhmmr.w.interia.pl/ Polish Mouse Club ]
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*[http://www.altpet.net/ Alternative Pet Association National Org.]
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{{Pet Species}}
  
[[Category:Hamsters]]
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[[Category:Pet rodents]]
  
[[cs:Křečík džungarský]]
+
[[de:Farbmaus]]
[[de:Dsungarischer Zwerghamster]]
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[[fi:Kesyhiiri]]
[[es:Phodopus sungorus]]
 
[[fr:Hamster russe]]
 
[[hr:Bijeli ruski hrčak]]
 
[[it:Phodopus sungorus]]
 
[[he:אוגר סיבירי]]
 
[[nl:Russische dwerghamster]]
 
[[ja:ジャンガリアンハムスター]]
 
[[pl:Chomik dżungarski]]
 
[[ru:Хомячок джунгарский]]
 
[[sl:Sibirski hrček]]
 
[[fi:Venäjänkääpiöhamsteri]]
 
[[zh:短尾侏儒倉鼠]]
 

Revision as of 14:16, 15 April 2007

White fancy mouse

Fancy mice ("fancy", in this context, means "hobby") are domesticated versions of the common or house mouse (Mus musculus).

Physical description

Fancy mice is a term to describe mice that have been selectively bred for pet or for show. They can vary greatly in size, from small pet mice that are approximately 16-18 cm (6 inches or so) long from nose to the tip of the tail, to show mice that measure 30cm (12 inches) nose to tail. Pet mice weigh about 25-40 g but large show mice can weigh up to 100g. As fancy mice have a different process of natural selection than their wild cousins, they come in a variety of colours and patterns. These include black, chocolate, blue, white, cream, lilac, red, fawn, champagne, cinnamon, golden agouti, silver agouti, silver and dove. Female mice are called does and males are called bucks. If well cared for, a mouse lives for around 2 years on average, with some reaching 3 years old.

Mice as pets

A tame black fancy mouse

Mice are kept as pets in many countries for a number of reasons. Fancy mice are small, inexpensive, relatively clean, and generally have a good temperament. Female mice are popular with many owners since they tend to cohabitate with other mice better than males. Additionally, the urine of female fancy mice does not contain as strong of an odor as that of the male mice. Bucks can fight with each other, unless they are introduced at a very young age, and they produce urine with a strong, musky smell. Some people, however, prefer the personality and curiosity of male mice. It is a good idea to keep fancy mice in groups of at least two if possible, as mice are sociable animals. However, if a buck and a doe of breeding age are put in the same cage they will produce a new litter every three weeks until separated.

Caging

Mice should be kept in well-ventilated areas. Fish tanks or cages with bars and plastic flooring make good housing. Give attention that the distance between the bars is under 9mm. It is a problem for young mice to force themselves through a cage with wider bars, and it's dangerous when they get stuck there.

The best products for in-cage bedding are aspen wood shavings or a commercial paper-based material. Despite popular belief, mice can be given newspaper for nesting, as the ink is soy based and nontoxic. They should not be given cedar shavings, as the oils in the wood are unhealthy. Small hide-aways and toys (such as a cardboard tube) are good to have in the cage. Commercial toys are also available.

Cat owners must also take special precautions to ensure that the mouse's housing is secure, as even the friendliest of domestic cats have been known to torment, kill and eat fancy mice if given the chance.

Feeding

Food for fancy mice is relatively inexpensive. Veterinarians generally recommend a product called lab block, a scientifically-formulated blend originally designed for mice in laboratories. Dry dog food is another good option when lab block is unavailable, as it offers balanced nutrition for a mouse and helps keep their teeth conditioned. Special mouse food found in pet stores also makes a good diet. In order to keep variety in their diets, mice can also eat oats, oily seeds, clean egg shell, breakfast cereal, and stale bread. Fruit and vegetables can be offered occasionally. They should also have clean water at all times and some sort of chewing wood in order to keep their teeth from growing too long. Wood found outdoors may not be safe, but many products are available from pet stores to satisfy the chewing instinct.

Breeding mice

It is important to consider breeding carefully and thoughtfully due to the rapid reproduction rate of mice. Adequate housing for the young should be available.

Female mice should not be bred before 12 weeks or after 8 months; doing so can be very dangerous, and some mice can die while giving birth. Bucks and does should be housed in separate enclosures until breeding is desired, at which point they can be placed together. The doe should be placed in the buck's enclosure, otherwise the doe will fight with the buck to defend her territory. Does come into heat around every five days, so the pair can be kept together for up to ten days.

Baby Mice.

A pregnant mouse will grow very round near the time of birth. The gestation period is approximately 18 to 21 days. Typical litter size is 4 to 12 young, though it can be less or more. It is best to remove the buck otherwise he will mate with the female as soon as the first litter is born, putting a huge strain on the mother, the unborn litter, and the new babies.

Baby mice, also called pups, are born blind, naked, and deaf. Their eyes are closed and their ears are stuck to the sides of their heads. After giving birth the mother should be left alone for a while, otherwise she might panic and eat the pups. She might also eat any dead or sickly offspring.

Pups begin to grow hair at two to four days. Ears open at three to five days, and the pups will start vocalizing. Eyes open at 14 days, and the babies will start exploring the world around them. At three weeks old they look like miniature versions of adult mice. At four to five weeks the pups should be separated from each other, otherwise they will breed with their siblings.

Mice clubs

Many fancy mice clubs have been set up around the globe. Shows are also held so owners can display their mice, where they are judged on color and behavior.

External links

Template:Pet Species

de:Farbmaus fi:Kesyhiiri