Myocastor coypus (nutria, coypu)
| Class | Mammalia |
| Order | Rodentia |
| Family | Myocastoridae |
| Genus | Myocastor |
| Species | Myocastor coypus |
| Common | nutria, coypu |
| Diet | herbivore; aquatic vegetation |
| Habitat | Aquatic; introduced to NW |
| Description | Large brown rodent, webbed hind feet. Tail is long, round and mostly hairless (unlike beaver or otter). |
| Skull Characteristics | Large infraorbital foramen, one of two large hystricomorphous rodents. Paroccipital process extends well beyond auditory bulla (distinct from porcupine). Lophate, prismatic teeth with rounded enamel loops. |
| Notes | Link to more species information:
Animal Diversity Web |