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rodent
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rodent
Britannica Concise Encyclopedia
Any member of the order Rodentia, which contains 50% of all living mammal species. Rodents are gnawing, mostly herbivorous, placental mammals. They have one pair of upper and one pair of lower, continuously growing, incisors. When the lower jaw is pulled back, the cheek teeth connect for grinding; when it is pulled forward and down, the incisors meet at the tips for gnawing. Rodent families include squirrels (Sciuridae); Old World mice ( mouse) and rats (Muridae); deer mice ( deer mouse), gerbils, hamsters, lemmings, muskrats, wood rats, and voles (Cricetidae); beaver (Castoridae); gophers (Geomyidae); guinea pigs (Caviidae); pocket mice ( pocket mouse) and kangaroo rats and mice (Heteromyidae); New and Old World porcupines (Erethizontidae and Hystricidae); and hutia (Capromyidae).
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Copyright 1994-2007 Encyclopedia Britannica, Inc.
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; ...and mangy, squirrel. Hold on -- maybe a squirrel is also classified as a rodent. Going to the Rs, "rococo," "rod," "rode," "rodent." Rodent: n. any of an order of gnawing mammals, as mice, beavers, etc. Beavers? A cute, fury beaver is a rodent? Wow, who knew? But...
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