[header] How to trap nutria [title] Know the differences between nutria and beavers/muskrats. [step] Nutria have dark brown or grey fur and look similar to beavers. Nutria are typically 100 cm in length from nose to tip of tail. 
They range from 4.5-9 kg in weight.. the most distinctive feature of nutria is a rat like tail and white whiskers about 10 cm in length.