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The cheek pouch is a specific morphological feature that is evident in particular subgroups of rodents (e.g. Heteromyidae and Geomyidae, or gopher), yet a common misconception is that certain families, such as Muridae (including the common black and brown rats), contain this structure when in fact their cheeks are merely elastic due to a high ...
Its name comes from the large, hamster-like pouches in its cheeks. It is not a true rat, but is part of an African branch of muroid rodents. It typically weighs between 1.0 and 1.4 kg (2.2 and 3.1 lb). [2] In its native Africa, the pouched rat lives in colonies of up to 20, usually in forests and thickets, but also commonly in termite mounds.
Pouched rats are found throughout much of sub-Saharan Africa with the exception of southern Africa. They are characterized by having large cheek pouches and a distinctive molar morphology. The molars are very similar to the type seen in the subfamily Murinae, but pouched rats probably evolved this similarity through convergent evolution.
Merriam's kangaroo rats, like other kangaroo rats and pocket mice, are members of the family Heteromyidae. Each species within this family has fur-lined food storage pouches. The cheek pouch is utilized as a portable cache for food while foraging.
The southern giant pouched rat is a large rodent, with males larger than females. Adult males typically weigh 1.5 to 2.0 kg (3.3 to 4.4 lb), while females weigh 1.2 to 1.6 kg (2.6 to 3.5 lb). The pouches for which these rats are named consist of oversized cheek-pouches.
Perognathinae is a subfamily of rodents consisting of two genera of pocket mice. Most species live in complex burrows within the deserts and grasslands of western North America , They feed mostly on seeds and other plant parts, which they carry in their fur-lined cheek pouches [ 2 ] to their burrows.
Giant pouched rats are only distantly related to the true rats, although until recently they had been placed in the same family, Muridae. [1] Recent molecular studies, however, place them in the family Nesomyidae, part of an ancient radiation of African and Malagasy muroids. The name "pouched rat" refers to their large cheek pouches. The ...
Gophers are burrowing rodents of the family Geomyidae, characterized by fur-lined, external cheek pouches used to gather and transport food. [41] The cheek pouches of geomyids such as the camas pocket gopher are controlled by a set of muscles, [ 42 ] with a sphincter controlling the opening and closing of the pouch.
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