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some mammals. In some species, such as hamsters, the cheek pouches are remarkably developed; they form two bags ranging from the mouth to the front of the shoulders. Cheek pouches facilitate the rapid collection of food as well as temporary storage and transport of both food and non-food items in several species. Étienne Geoffroy Saint-Hilaire described that some bats of the genus Nycteris have an amazing form of cheek

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