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Dasyproctidae (agoutis, pacas; order Rodentia, suborder Hystricomorpha) A family of rodents whose claws (fore limb: four; hind limb: three) resemble hoofs. They are long-legged animals with a running gait. The tail is short or absent. Cheek teeth are hypsodont. These rodents are distributed throughout the northern part of S. America and Central America. There are four genera, with 11 species.