- Amphibious rodent - Large semi-aquatic rodent - Semi-aquatic rodent - Water-loving rodent - An amphibious rodent, of the genus Castor. - The fur of the beaver. - A hat, formerly made of the fur of the beaver, but now
usually of silk.
- Dugong relative - Large Aquatic Mammal - Marine mammal - sea cow - Sirenian mammal of coastal America - Any species of Trichechus, a genus of sirenians; -- called
alsosea cow.