coypu(redirected from Myocastor)
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Related to Myocastor: nutria
a large chestnut brown, 14 inch long and 15 lb in weight, aquatic rodent which is farmed extensively for its fur. It is herbivorous, diurnal and very fertile. As a wild animal in countries where it has escaped, it has become a pest. Called also nutria, Myocastor coypus, swamp beaver.