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 = Syrian or Golden Hamster
 
| status = {{StatusEndangered}}
 
| image = 100_983.jpg
 
| image_width = 250px
 
| regnum = [[Animal]]ia
 
| phylum = [[Chordate|Chordata]]
 
| subphylum = [[Vertebrate|Vertebrata]]
 
| classis = [[Mammal]]ia
 
| ordo = [[Rodent]]ia
 
| subordo = [[Sciurognathi]]
 
| superfamilia = [[Muroidea]]
 
| familia = [[Cricetidae]]
 
| subfamilia = [[Cricetinae]]
 
| genus = ''[[Mesocricetus]]''
 
| species = '''''M. auratus'''''
 
| binomial = ''Mesocricetus auratus''
 
| binomial_authority = [[George Robert Waterhouse|Waterhouse]], 1839
 
}}
 
  
The '''Syrian Hamster''' or '''Golden Hamster''', ''Mesocricetus auratus'', is the best known member of the [[rodent]] [[subfamily]] [[Cricetinae]], the [[hamster]]s.  They may now be [[extinct]] in nature, but are popular as house pets all across the world, and are also used in scientific research. Adults grow from 12.5 to 17.5 cm (5 to 7 inches) in length, and in captivity will usually live from 2 to 3 years.
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'''Fancy mice''' ("fancy", in this context, means "hobby") are domesticated versions of the common or house mouse (''[[Mus musculus]]'').
  
==Biology==
+
==Physical description==
 +
Fancy mice are approximately 16-18 cm long from nose to the tip of the tail, and weigh about 35 g for females and 50 g for males. As fancy mice have a different process of [[natural selection]] than their wild cousins, they come in a variety of colors and patterns. Most fancy mice tend to be black, brown, or white in their primary color, but others (blue, champagne, white-[[albino]], chocolate, cream, dove, fawn, lilac, red, silver, or cinnamon) in color are available. Female mice are called ''does'' and males are called ''bucks''.
  
Like most members of the subfamily, the Golden Hamster has expandable cheek pouches, which reach from its cheeks to its shoulders.  In the wild, hamsters are [[larder hoarding|larder hoarders]], and they use their cheek pouches to transport food to their burrows.  They can load a remarkable amount of food into their pouches; their name in the local [[Arabic language|Arabic]] dialect in the area where they are found translates as "father of saddlebags" &#1571;&#1576;&#1608; &#1580;&#1585;&#1575;&#1576;. If food is plentiful, they will store it in large amounts, and it has been reported that 25 kg of grain was found in the burrow of a single hamster.  They are notoriously good at reproducing, with the shortest gestation period of any mammal.
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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, 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.
  
[[image:Jan2306_122.jpg|thumb|left|male teddy bear hamster]]
+
==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 below than 9mm. Also at the doors. It is no problem for young mice to force themselves through a cage with wider bars, and it's dangerous when they get stuck there.  
  
Most hamsters in American and English pet stores are Syrian Hamsters.  Originally, Syrian Hamsters came in just one color — the mixture of brown, black, and gold which gave them their "Golden" name — but they have since developed a myriad of color mutations such as cream, white, blonde, banded, tortoiseshell, calico, and sable. Therefore in pet stores today, ''Golden Hamster'' is only used to label the original coloration (also known as "agouti), while the other-colored short-hairs are banded under the lable ''Fancy Hamster''. ''Teddy Bear'' is a term used to describe the long-haired variety of the Syrian Hamster, named so for their remarkable resemblance to toy teddy bears.  They are also sometimes known as "angora hamsters".  Male teddy bear hamsters usually have much longer fur than the female variety, culminating in a "skirt" of longer fur around their backsides. ''Black Bears'' are a recent off-shoot of teddy bear hamsters (mutation discovered in 1985), with their major difference being their black-colored fur.  It can be argued that black bears are just black teddy bears rather than their own breed; on the other hand, black bears are selectively bred for their larger size and more docile nature as well as their color.
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The best products for in-cage bedding are aspen wood shavings, dried corn cob, or a commercial paper-based material. Mice can also be given newspaper with black-and-white printing for nesting. But mice 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 also good to have in the cage. Commercial toys are also available.
  
Syrian Hamsters are wildly popular as housepets due to their docile, inquisitive natures and small size.  They are popular as "first pets" for young children, as well as being classroom animals, because of their hardiness and relative ease of care.  Some pet owners find them more attractive in relation to rats and other rodents due to their lack of visible tails. When kept as pets, however, Syrians must be housed, past the age of around 10 weeks, on their own. Syrian hamsters are notoriously territorial, and will frequently attack and, indeed, kill, other adult hamsters of the same sex.
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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 or kill fancy mice if given the chance.
  
Syrian Hamsters have also been used in scientific research — in the study of many diseases, as well as in the study of behaviour. They have a number of [[fixed action pattern]]s that are readily observed, including scent-marking. They are particularly used in airway and respiratory physiology research.
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==Feeding==
 +
Food for fancy mice is relatively inexpensive. [[veterinarian|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.
  
== Discovery ==
+
==Breeding mice==
 +
It is important to consider breeding carefully and to do so thoughtfully due to the very fast reproducton rate of mice, and the housing of the young.
  
[[Image:hamster.jpg|thumb|right|albino golden hamster]]
+
Female mice should not be bred before 12 weeks or after 8 months. Doing so can be very dangerous and some mice can even die while giving birth. Don't forget, when a mouse gets to 9 months old they are already very old. Bucks and does should be housed in separate enclosures until you want to breed. When the time comes you can place them together. Place the doe in the buck's tank, otherwise the doe will fight with the buck to defend her territory. Does come into heat around every five days, so it is best to leave them together for ten days or so.
In [[1839]] [[Britain|British]] [[zoologist]] [[George Robert Waterhouse]] reportedly found an elderly female hamster in Syria, naming it ''Cricetus auratus,'' the Golden Hamster. The hamster's fur was on display at the [[British Museum (Natural History)]].  The Syrian Hamster was then ignored by European science for the next century.
+
 +
[[Image:Mice 24 Nov 2004.jpg|thumb|Baby Mice.]]
  
In 1930, [[Israel Aharoni]], a zoologist and professor at the [[Hebrew University of Jerusalem]], found a mother and litter of hamsters in the [[Syria]]n desert. By the time he got back to his lab, most had died or escaped. The remaining hamsters were given to his university, where they were successfully bred. They were a bit bigger than the ones Waterhouse found, so they were named ''Mesocricetus auratus'', although they were probably the same species. ''Mesocricetus auratus'' is the currently accepted scientific name of Syrian Hamsters.
+
You can tell when a mouse is pregnant because they grow very round near to the time of birth. The gestation period goes 18 - 21 days. She will likely give birth to 8-12 though it can be 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, unborn litter and the new babies.
  
Descendants of these hamsters were shipped to scientific labs around the world, for use as research animals. They arrived in the [[United Kingdom]] in 1931, and in 1938 reached the United States. Soon after their initial discovery, they were found to make great pets.  Just about all Golden Hamsters are descended from the original litter found in Syria, except for a few that were brought into the United States by travellers who found them in the desert. A separate stock of hamsters was imported into the US in 1971, but it isn't known if any of today's North American pets are descended from them.
+
Baby mice (pups) are born blind, naked and deaf. Their eyes are closed and ears are stuck to the sides of their heads. It’s best to leave the mother alone for a while, otherwise she might panic and eat the babies. She might also eat any dead or sickly offspring, getting the litter down to a reasonable size. You can tell if the babies have drank any milk because their tummies turn white.
  
==See also==
+
Hair begins to grow at two to four days; you can see what the patches in marked mice will look like now. Ears open at three to five days and they will start vocalizing more. Eyes open at 14 days and now the babies will start exploring the world around them. At 3 weeks old they look like miniature versions of adult mice. At 4-5 weeks pups must be separated otherwise they will breed with their siblings.
*[[Hamster]]
+
 
 +
==Mice as Feeder Animals==
 +
A very common use of mice currently is to feed many species of [[snakes]], [[lizards]], and even [[tarantulas]].  Most pet stores now carry mice for this purpose.  They breed quickly, grow quickly, are easy to care for, and come in a wide variety of sizes due to this.  This makes them suitable for consumption by many different size animals.  Mice also seem to be a desirable food item for a very large variety of [[carnivores]].  Common terms used to refer to different age/size mice are pinkies, fuzzies, hoppers, and adults.  Pinkies are newborn mice that have not yet grown fur.  Fuzzies have some fur but are generally not very mobile, hoppers have a full coat of hair and are fully mobile but are smaller than adult mice.  These terms also refer to the various growth stages of [[rat]]s (also see [[Fancy rat]]).
 +
 
 +
==Mice clubs==
 +
Many fancy mice clubs have been set up around the globe. Shows are also held so owners can display their mice. ''See External links below.''
  
 
==External links==
 
==External links==
 
+
*[http://www.rmca.org Rat & Mouse Club of America]
*[http://www.hamster-heaven.com Hamster Heaven]
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*[http://www.miceandrats.com/miceas.htm Mice as Pets]
*[http://www.xander.it/video.htm Xander.it] - Video collection of Syrian hamsters (page is in Italian)
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*Varieties of [http://www.miceandrats.com/standmic.htm Fancy Mice]
*[http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&id=10036&lvl=3&keep=1&srchmode=1&unlock Genome information]
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*[http://www.nationalmouseclub.co.uk National Mouse Club]
*[http://www.petwebsite.com/hamsters/syrian_hamsters.htm Petwebsite Entry on Syrians]
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*[http://www.dmrm.de Mouse Club of Germany]
*[http://hometown.aol.com/TheRiverRd/ The River Road Hamstery]- Very good information on hamster breeding, especially for coat types
 
*[http://www.hamsoc.org.uk/varieties.php The Hamster Society]
 
  
 
[[Category:Animals kept as pets]]
 
[[Category:Animals kept as pets]]
[[Category:Hamsters]]
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[[Category:Old World rats and mice]]
  
[[bg:Златист хамстер]]
+
[[de:Farbmaus]]
[[de:Goldhamster]]
 
[[fr:Hamster doré]]
 
[[it:Mesocricetus auratus]]
 
[[he:אוגר זהוב]]
 
[[nl:Goudhamster]]
 
[[ja:ゴールデンハムスター]]
 
[[pl:Chomik syryjski]]
 
[[fi:Kultahamsteri]]
 
[[sv:Guldhamster]]
 
[[zh:敘利亞倉鼠]]
 

Revision as of 14:17, 7 June 2006

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 are approximately 16-18 cm long from nose to the tip of the tail, and weigh about 35 g for females and 50 g for males. As fancy mice have a different process of natural selection than their wild cousins, they come in a variety of colors and patterns. Most fancy mice tend to be black, brown, or white in their primary color, but others (blue, champagne, white-albino, chocolate, cream, dove, fawn, lilac, red, silver, or cinnamon) in color are available. Female mice are called does and males are called bucks.

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, 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 below than 9mm. Also at the doors. It is no 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, dried corn cob, or a commercial paper-based material. Mice can also be given newspaper with black-and-white printing for nesting. But mice 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 also 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 or kill 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.

Breeding mice

It is important to consider breeding carefully and to do so thoughtfully due to the very fast reproducton rate of mice, and the housing of the young.

Female mice should not be bred before 12 weeks or after 8 months. Doing so can be very dangerous and some mice can even die while giving birth. Don't forget, when a mouse gets to 9 months old they are already very old. Bucks and does should be housed in separate enclosures until you want to breed. When the time comes you can place them together. Place the doe in the buck's tank, otherwise the doe will fight with the buck to defend her territory. Does come into heat around every five days, so it is best to leave them together for ten days or so.

Baby Mice.

You can tell when a mouse is pregnant because they grow very round near to the time of birth. The gestation period goes 18 - 21 days. She will likely give birth to 8-12 though it can be 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, unborn litter and the new babies.

Baby mice (pups) are born blind, naked and deaf. Their eyes are closed and ears are stuck to the sides of their heads. It’s best to leave the mother alone for a while, otherwise she might panic and eat the babies. She might also eat any dead or sickly offspring, getting the litter down to a reasonable size. You can tell if the babies have drank any milk because their tummies turn white.

Hair begins to grow at two to four days; you can see what the patches in marked mice will look like now. Ears open at three to five days and they will start vocalizing more. Eyes open at 14 days and now the babies will start exploring the world around them. At 3 weeks old they look like miniature versions of adult mice. At 4-5 weeks pups must be separated otherwise they will breed with their siblings.

Mice as Feeder Animals

A very common use of mice currently is to feed many species of snakes, lizards, and even tarantulas. Most pet stores now carry mice for this purpose. They breed quickly, grow quickly, are easy to care for, and come in a wide variety of sizes due to this. This makes them suitable for consumption by many different size animals. Mice also seem to be a desirable food item for a very large variety of carnivores. Common terms used to refer to different age/size mice are pinkies, fuzzies, hoppers, and adults. Pinkies are newborn mice that have not yet grown fur. Fuzzies have some fur but are generally not very mobile, hoppers have a full coat of hair and are fully mobile but are smaller than adult mice. These terms also refer to the various growth stages of rats (also see Fancy rat).

Mice clubs

Many fancy mice clubs have been set up around the globe. Shows are also held so owners can display their mice. See External links below.

External links

de:Farbmaus