Mink are dark-coloured, semiaquatic, carnivorous mammals in the genera Mustela and Neogale and part of the family Mustelidae, which also includes weasels, stoats, martens, otters, badgers, and others. There are two extant species referred to as "mink", the American mink and the European mink. The extinct sea mink was related to the American mink but was much larger.