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Chevrotains, or mouse-deer, are diminutive, even-toed ungulates that make up the family Tragulidae, and are the only living members of the infraorder Tragulina. The 10 extant species are placed in three genera, [ 1 ] [ 2 ] but several species also are known only from fossils . [ 3 ]
These are large compared to the rest of the body and can be retracted into the body. [ citation needed ] The tail, which is used for balance, [ 11 ] [ 12 ] [ 13 ] has only a thin covering of hair as it is the main peripheral organ of heat loss in thermoregulation [ 12 ] along with—to a lesser extent—the hairless parts of the paws and ears.
The mouse genome has been sequenced, and virtually all mouse genes have human homologs. The mouse has approximately 2.7 billion base pairs and 20 pairs of chromosomes. [12] They can also be manipulated in ways that are illegal with humans, although animal rights activists often object. A knockout mouse is a genetically modified mouse that has ...
Within Ruminantia, the Tragulidae (mouse deer) are considered the most basal family, [15] with the remaining ruminants classified as belonging to the infraorder Pecora. Until the beginning of the 21st century it was understood that the family Moschidae (musk deer) was sister to Cervidae .
The laboratory mouse genome has been sequenced and many mouse genes have human homologues. [1] Lab mice are sold at pet stores for snake food and can also be kept as pets . Other mouse species sometimes used in laboratory research include two American species, the white-footed mouse ( Peromyscus leucopus ) and the North American deer mouse ...
Peromyscus maniculatus is a rodent native to eastern North America.It is most commonly called the eastern deer mouse; when formerly grouped with the western deer mouse (P. sonoriensis), it was referred to as the North American deermouse [2] and is fairly widespread across most of North America east of the Mississippi River, with the major exception being the lowland southeastern United States.
From ancient history to the modern day, the clitoris has been discredited, dismissed and deleted -- and women's pleasure has often been left out of the conversation entirely. Now, an underground art movement led by artist Sophia Wallace is emerging across the globe to challenge the lies, question the myths and rewrite the rules around sex and the female body.
The California deermouse has very large ears, and its tail is longer than the head and body combined. Including the tail, which is about 117 to 156 mm (4.6 to 6.1 in) long, the mouse ranges in length from 220 to 285 mm (8.7 to 11.2 in). [6] The coat is overall orange, mixed with black and brown hairs.