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Baird's pocket gopher
Baird’s pocket gopher or the Louisiana pocket gopher (''Geomys breviceps'')〔Smithsonian National Museum of Natural History. "Geomys breviceps." North American Mammals. 2009. 7 May 2009. ()〕 is a species of pocket gopher that is native to the southern United States. In total, there are three almost identical species of eastern pocket gopher; ''Geomys attwateri'', ''G. bursarius'', and ''G. breviceps''. ''G. breviceps'' is larger in size, ''G. attwateri'' is medium-sized and ''G. bursarius'' is a bit smaller.〔 Other than by size variation they are not identifiable by external features. Baird’s pocket gophers are small rodents with most of their weight on the top half of their bodies.
Baird’s pocket gopher is native to eastern Texas, western Louisiana, eastern Oklahoma and southwestern Arkansas.〔 It is a burrowing creature, meaning it digs tunnels and generally lives underground, except during the rainy seasons. It has sharp, long, curved front claws designed specifically for digging. Generally, it is safe from predators since it lives underground, though other burrowing rodents such as badgers and long tailed weasels may pose a threat. Baird’s pocket gopher has bacteria in its digestive system, allowing it to digest various grasses and it is able to re-ingest fecal pellets.〔 It is polygamous and has a high reproductive rate, which is one of the main reasons for its survival. On average, Baird’s pocket gopher has two to three babies per litter.〔 It lives about 1 to 2 years in the wild.〔 〕
== Description ==
The pocket gophers are considered to be medium to small in size in the order ''Rodentia''. Baird's pocket gopher has a cylinder shaped body with most of its weight carried near its head. The zygomatic arch is shorter than the width of the mouth, meaning the dorsal of the animal exceeds the jugal bone. The neck is a little thinner but the heaviest part of the body is carried on the back of the head. The eyes are very small and beadlike and the ears are identified only by a meager flap of skin that follows the top of the temple. The external pouches on the cheeks are fur-lined and used for transporting food. The body gradually tapers from the head to the tail, widening a little at the thighs.
Short hair covers the body and ranges in color from pale brown to black and is usually paler towards the belly area. The tail is short, thick, and bare with very little hair found at the base and averaging in length. The front feet are used for digging and the feet appear as long curved claws; the rear feet are smaller with an average length of . The animals look identical to ''G. attwateri'' and ''G. bursarius'' and only scientific testing can distinguish them. The males have an average weight of and a cranium length of , while the average weight for females is with a cranium length of .
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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