The Coypou (Coypu Myopotamus coypus) is a South American rodent about the size of and resembling a beaver, growing to about 75 cm in length. Its limbs are short, its tail in part bare and scaly, and it swims with great ease, its hind-feet being webbed. The coypou inhabits burrows by the banks of streams. It has long been valued for its fur (called ...