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The ermine (Mustela erminea) is a small mammal in the Mustelidae family of weasels.

Ermine

The ermine (Mustela erminea) is a small mammal in the Mustelidae family of weasels.

The ferret (Mustela putorius furo) is a carnivorous mammal in the Mustelidae family of weasels.

Ferret in the Wild

The ferret (Mustela putorius furo) is a carnivorous mammal in the Mustelidae family of weasels.

The American marten (Martes americana) is a North American member of the Mustelidae family, sometimes referred to as the Pine Marten. The term Pine Marten is also used to refer to a separate Martes species from Europe. It differs from the fisher (Martes pennanti) in that it is smaller in size, has a pelage which is usually brown with an irregularly shaped chest-patch that is lighter in color.

American Marten

The American marten (Martes americana) is a North American member of the Mustelidae family, sometimes…

The Fisher (Martes pennanti) is a marten in the Mustelidae family of weasels.

Fisher Marten in Tree

The Fisher (Martes pennanti) is a marten in the Mustelidae family of weasels.

The Sea Otter (Enhydra lutris) is a marine mammal in the Mustelidae family of weasels.

Sea Otter

The Sea Otter (Enhydra lutris) is a marine mammal in the Mustelidae family of weasels.