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

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''This article concerns a particular breed of rabbit, the Netherland dwarf.  For information on domestic rabbits in general, see [[Domestic rabbit]].''
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{{Taxobox
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| color = pink
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| name = Chinese Hamster
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| image = Chinese Hamster.jpg
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| image_width = 220px
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| image_caption = Chinese hamster, white-spotted type
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| regnum = [[Animal]]ia
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| phylum = [[Chordate|Chordata]]
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| classis = [[Mammal]]ia
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| ordo = [[Rodent]]ia
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| familia = [[Cricetidae]]
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| genus = ''[[Cricetulus]]''
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| species = '''''C. griseus'''''
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| binomial = ''Cricetulus griseus''
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| binomial_authority = Milne-Edwards, 1867
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}}
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The '''Chinese Hamster''' is a species of [[hamster]], scientific names ''Cricetulus griseus'', which originates in the [[desert]]s of northern [[China]] and [[Mongolia]]. These animals grow to between 7.5 and 9 cm in length and as adults can weigh 50-75 grams. They live two to three years on average. The Chinese hamster is often kept as a pet or (in the past) as a laboratory animal.
  
[[Image:Netherlanddwarfbunny.jpg|right|thumb|A pet Netherland Dwarf.]]
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A Chinese hamster's body proportions, compared with those of other hamsters, appear "long and thin" and they have (for a hamster) a relatively long tail. Chinese hamsters are not related to the social [[dwarf hamster|"dwarf" hamsters]]. The term "dwarf" is often used to refer solely to animals in the genus ''Phodopus'', (the two types of [[Phodopus sungorus|Russian Dwarf Hamster]]s and [[Phodopus roborovski|Roborovskii Dwarf Hamster]]s).
[[Image:Netherland Dwarf On Brick.jpg|right|thumb|A female Netherland Dwarf.]]
 
The '''Netherland Dwarf''' is a popular [[breed]] of [[domestic rabbit]] (''Oryctolagus cuniculus'') originating in [[the Netherlands]].  Smaller than most [[List of rabbit breeds|rabbit breeds]], Netherland dwarf rabbits weigh 1 to 3 [[pound (mass)|lb]] (0.5 to 1.4 [[kilogram|kg]]) and are usually kept as [[pet]]s or exhibition animals.  They are not typically used as sources of [[meat]] or [[fur]] because of their small size.
 
  
Most rabbits sold in [[pet store]]s are Netherland dwarfs, Netherland dwarf-[[selective breeding|derived breeds]] (often referred to simply as ''[[#Dwarf breeds|dwarf breeds]]''), or Netherland dwarf [[hybrid|crosses]].  Their popularity as pets stems from their [[baby]]ish appearance and their smaller [[cage]] space requirement compared to larger rabbit breeds.
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The wild colour is greyish brown above with a black stripe down the spine and a whitish belly.  This coloration, combined with their lithe build and longer tail, makes them look "mousy" to some eyes and, in fact, they are members of the group called [[ratlike hamster]]s. Besides the wild colour, a well-known variation is the white-spotted Chinese hamster, which often is greyish white all over, with only a dark stripe on its back.
  
==History==
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They have quiet temperaments and are easily handled; one of their endearing traits is that of clinging to a finger with all four paws, rather like a harvest mouse on a corn stalkChinese hamsters can be quite nervous as youngsters but, once they are tame, display an endearing calmness and gentleness of character.
The Netherland dwarf breed was first produced in the [[Netherlands]] in the early [[20th century]].  Small [[List of rabbit breeds#Polish|Polish rabbits]] were bred with smaller wild [[European rabbit|rabbit]]s<ref name="ARBA book: Netherland Dwarf">
 
{{cite book
 
  | last = American Rabbit Breeders Association
 
  | authorlink = American Rabbit Breeders' Association
 
  | title = Official Guide Book: Raising Better Rabbits & Cavies
 
  | publisher = American Rabbit Breeders Association, Inc.
 
  | date = 2000
 
  | location = Bloomington, IL
 
  | pages = 65 }}
 
</ref>; after several generations the resulting animal was a very small domestic rabbit available in a wide variety of colors and patternsNetherland dwarfs were first imported into the [[United Kingdom]] in [[1948]]<ref name="ARBA book: Netherland Dwarf" />.  In the [[1960s]] and [[1970s]] the [[United States]] imported its first Netherland dwarf rabbits.  The breed was accepted by the [[American Rabbit Breeders' Association]] in [[1969]] using a modification of the British standard<ref name="ARBA book: Netherland Dwarf" />.
 
  
Early dwarfs, even into the 1970s and [[1980s]], had fearful and sometimes aggressive [[temperament]]s.  This was a result of [[breeder]]s selecting wild [[breeder (animal)|breeding animals]] for their size.  The first dwarf rabbits behaved more like these [[wild]] rabbits than domestic animals and were not good pets. However, through generations of [[selective breeding]], the modern Netherland dwarf has become a gentle, friendly pet rabbit, though it still retains a more energetic disposition than larger breeds.
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In the past, Chinese hamsters were commonly used [[Experimental animal|laboratory animals]], until they were replaced by the common mouse and rat, which are easier to keep and breed. However, quite a few biotech drugs are still being produced by putting the gene for the protein into [[Chinese Hamster Ovary cell|Chinese hamster ovary (CHO) cells]], which then produce the protein.
  
==Appearance==
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Of note, some [[US]] states such as [[California]] regard the Chinese hamster as a [[Pest (organism)|pest]], and as a result require a special permit to own, breed or sellOther states such as [[New Jersey]] call it an [[Introduced species|exotic animal]], and require a similar permit, in order to prevent the proliferation of non-indigenous animals.
[[Image:Netherlanddwarf-loki.jpg|thumb|right|Young Netherland dwarf in a mismarked Himalayan pattern.]]
 
Netherland dwarfs' [[head]]s and [[eye]]s are disproportionately large with respect to their bodies, and their ears are tiny and carried high on the head.  Additionally, their faces are rounded and shortenedThese features, a part of the animals' [[dwarfism]], cause them to look [[infant]]ile even into [[adulthood]].
 
  
Dwarf crosses frequently retain some of these characteristics, depending on the breed the dwarf is crossed with. However, crosses rarely look as babyish as the [[purebred]] dwarfs and are usually somewhat larger.
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==The latin name==
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There is quite some confusion over the latin name of the Chinese hamster and the closely related [[Chinese striped hamster]]. Some people consider the Chinese hamster (''Cricetulus griseus'') and the Chinese striped hamster (''Cricetulus barabensis'') different species [http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Undef&id=10028], whereas others classify them as identical [http://walnut.bioc.columbia.edu/srs7bin/cgi-bin/wgetz?-id+4mKAd1Sl9c0+%5Btaxonomy-ID:10029%5D+-e], the Chinese striped hamster as a subspecies of the Chinese hamster (in which case the latin name of the Chinese striped hamster would be ''Cricetulus griseus barabensis'') [http://www.ratbehavior.org/pet_rodent_classification.htm] or the other way round (in which case the latin name of the Chinese hamster would be ''Cricetulus barabensis griseus'') [http://www.napak.com/chinese_hamster.html].
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Chinese hamsters are not so large. They are kept as pets in most palces. If they are so large they are not so quick.
  
[[Purebred]] Netherland dwarfs come in a wide variety of colors, including [[List of rabbit breeds#Himalayan|Himalayan]], Black, Blue, Chocolate, Lilac, Smoke Pearl, Sable Point, Tortoiseshell, Chestnut, Siamese Sable, Opal, Lynx, Squirrel, [[List of rabbit breeds#Chinchilla|Chinchilla]], Otter, Tan, Silver Marten, Sable Marten, Smoke Pearl Marten, Orange, Fawn, Steel, Blue-Eyed White and Ruby Eyed White<ref name="ARBA book: Netherland Dwarf" />.  Other colors (including ''mismarks'') exist in non-show-quality Netherland dwarfs and in dwarf [[mongrel]] rabbits.--[[User:69.246.240.235|69.246.240.235]] 03:11, 2 January 2007 (UTC)so  netherland dwarf are very special be careful with females they can really scratch seriously.
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==References==
 
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*[http://www.napak.com/chinese_hamster.html The Chinese Hamster]
==Netherland dwarfs as pets==
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*[http://www.hamster-heaven.com Hamster Heaven]
:''Main article: [[Domestic rabbit#Rabbits as Pets|Domestic rabbit]]''
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*[http://www.nic.funet.fi/pub/sci/bio/life/mammalia/rodentia/cricetidae/cricetulus/index.html Taxonomy of hamsters]
 
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*[http://www.ratbehavior.org/pet_rodent_classification.htm Pet rodent classification]
===Behavior===
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*[http://www.mike-duquette.org/Hamster_Pages/species.htm Hamster species]
Netherland dwarf rabbits have the same basic behavioral traits as other domestic rabbits. They can be litter-trained and socialized with [[dog]]s and [[cat]]s.
 
 
 
They tend to have [[wikt:spunky|spunkier]] and more energetic [[temperament]]s than larger breeds of rabbit and are rarely content to sit still when outside of the cage. They are curious animals and have a tendency to nibble on nearby objects and even human beings. However, they are extremely fragile animals and easily stressed, and as such they do not make good pets for young children.  
 
 
 
===Diet===
 
Like other domestic rabbits, dwarf rabbits consume [[grasses]], [[cereal|grains]], and other succulent [[Leaf vegetable|greens]]. Their [[digestive system]] is somewhat less hardy than their larger cousins, and many leafy vegetables such as lettuce and cabbage can give them health problems.  Generally [[hay]] and a [[pellet]]ed feed should make up the largest portion of their diet.
 
 
 
==Dwarf breeds==
 
 
 
Rabbit breeds derived from breeding larger rabbits with the Netherland dwarf are known as ''dwarf breeds''. Most smaller breeds, like the Mini-Rex, the Jersey Wooly, and the Holland lop, are results of such breedings.  Generally dwarf breeds are slightly larger than the typical Netherland dwarf, not growing larger than 4 to 5 lb (1.8 to 2.3 kg).  Most have shortened faces compared to larger rabbits, and some even preserve the rounded [[head]], large [[eye]]s, or small [[ear]]s of the Netherland dwarf.
 
 
 
Most dwarf breeds are intended to bring a specialized characteristic, such as a specific fur type, into a smaller rabbit.  Mini-Rex were created through the breeding of dwarfs with [[List of rabbit breeds#Rex|Rex]] rabbits, a fur breed with a short, [[plush]] coat, and retain both the dwarf's size and the Rex fur. Jersey Woolies are a dwarf version of the [[Angora rabbit]], a [[wool]]-producing breed. [[List of rabbit breeds#Lop|Lop]]-eared rabbit breeds, interbred with dwarfs, were used to create [[Holland Lop]] and Mini-lop rabbits.
 
 
 
==Notes==
 
<references />
 
  
 
==See also==
 
==See also==
* [[Dwarf rabbit]]
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*[[Chinese Striped Hamster]]
* [[List of rabbit breeds]]
 
* [[American Rabbit Breeders' Association]]
 
* [[Cuteness]]
 
 
 
  
[[Category:Rabbits as pets]]
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[[Category:Hamsters]]
[[Category:Leporids]]
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[[Category:Mammals of Asia]]
  
[[zh:荷蘭侏儒兔]]
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[[fr:Hamster de Chine]]
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[[ja:チャイニーズハムスター]]
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[[hr:Kineski hrčak]]
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[[nl:Chinese dwerghamster]]
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[[pl:Chomik chiński]]

Revision as of 05:53, 3 January 2007

Template:Taxobox The Chinese Hamster is a species of hamster, scientific names Cricetulus griseus, which originates in the deserts of northern China and Mongolia. These animals grow to between 7.5 and 9 cm in length and as adults can weigh 50-75 grams. They live two to three years on average. The Chinese hamster is often kept as a pet or (in the past) as a laboratory animal.

A Chinese hamster's body proportions, compared with those of other hamsters, appear "long and thin" and they have (for a hamster) a relatively long tail. Chinese hamsters are not related to the social "dwarf" hamsters. The term "dwarf" is often used to refer solely to animals in the genus Phodopus, (the two types of Russian Dwarf Hamsters and Roborovskii Dwarf Hamsters).

The wild colour is greyish brown above with a black stripe down the spine and a whitish belly. This coloration, combined with their lithe build and longer tail, makes them look "mousy" to some eyes and, in fact, they are members of the group called ratlike hamsters. Besides the wild colour, a well-known variation is the white-spotted Chinese hamster, which often is greyish white all over, with only a dark stripe on its back.

They have quiet temperaments and are easily handled; one of their endearing traits is that of clinging to a finger with all four paws, rather like a harvest mouse on a corn stalk. Chinese hamsters can be quite nervous as youngsters but, once they are tame, display an endearing calmness and gentleness of character.

In the past, Chinese hamsters were commonly used laboratory animals, until they were replaced by the common mouse and rat, which are easier to keep and breed. However, quite a few biotech drugs are still being produced by putting the gene for the protein into Chinese hamster ovary (CHO) cells, which then produce the protein.

Of note, some US states such as California regard the Chinese hamster as a pest, and as a result require a special permit to own, breed or sell. Other states such as New Jersey call it an exotic animal, and require a similar permit, in order to prevent the proliferation of non-indigenous animals.

The latin name

There is quite some confusion over the latin name of the Chinese hamster and the closely related Chinese striped hamster. Some people consider the Chinese hamster (Cricetulus griseus) and the Chinese striped hamster (Cricetulus barabensis) different species [1], whereas others classify them as identical [2], the Chinese striped hamster as a subspecies of the Chinese hamster (in which case the latin name of the Chinese striped hamster would be Cricetulus griseus barabensis) [3] or the other way round (in which case the latin name of the Chinese hamster would be Cricetulus barabensis griseus) [4]. Chinese hamsters are not so large. They are kept as pets in most palces. If they are so large they are not so quick.

References

See also

fr:Hamster de Chine ja:チャイニーズハムスター hr:Kineski hrčak nl:Chinese dwerghamster pl:Chomik chiński