Any of various aquatic, carnivorous mammals of the genus Lutra and allied genera, related to the minks and weasels and having webbed feet and dense, dark brown fur.

• 水獭一种小獭属的及与该属动物有亲缘关系的水生食肉哺乳动物，与水貂和鼬鼠有亲缘关系，长有蹼足和黑褐色的密毛