The coypu (from the Mapudungun, koypu) or nutria (Myocastor coypus), is a large, herbivorous, semiaquatic rodent and the only member of the family Myocastoridae. Originally native to temperate South America, it has since been introduced to North America, Europe, Asia, and Africa, primarily by fur ranchers. Although it is still valued for its fur in some regions, its destructive feeding and burrowing behaviors make this invasive species a pest throughout most of its range. Coloration is brownish, and both sexes are similar in appearance and weight. The nutria is unique in that it has 3 sets or lengths of fur. Primary guard hairs are about 3 inches in length. Beneath this layer is the secondary guard hairs,
Ten Facts about Nutria
- Adults are typically 5-9 kg (11-20 lb) in weight, and 40-60 cm (16-24 in) in body length, with a 30-45 cm (12-18 in) tail.
- Nutria are apt to breed in any month of the year in North America.
- One male usually has 2 or 3 mates which share the same burrow.
- Female nutria mature at about 5 1/2 months of age, and female nutria usually have two litters per year.
- Nutria spend most of their time in or near the water. Although they are awkward and vulnerable on land the species will travel inland to feed upon preferred foods, including crops.
- Mostly in the lower Mississippi River area, but scattered colonies north to New Jersey. Also in Washington and Oregon.
- Nutria have 3 sets or lengths of fur: primary and secondary guard hairs, and under fur.
- Nutria have valves in their mouths and noses that can be closed so water doesn't get in.
- Life span is 1-2 year.
- Predators includes snakes, dogs, wild cats, birds, owls, foxes.
