Species: Enhydra lutris
Encyclopedia of Puget Sound

Pelage thick, mainly reddish, dark brown, or black, with the head whitish in older individuals, especially males; tail thick (to about 35 cm), about 1/4 of body length; hind feet flattened and webbed, outer toe longest, with vestigial leathery foot pads; front feet relatively small and round; ear pinnae small; to about 1.5 m in total length; adult males usually 25-40 kg, females usually 15-25 kg.
Articles:
This article was originally published by the Washington Department of Fish and Wildlife as part of its annual report Threatened and Endangered Wildlife in Washington.

Classification
Mammalia
Carnivora
Mustelidae
Enhydra
NatureServe
Classification
Ecology and Life History
Pelage thick, mainly reddish, dark brown, or black, with the head whitish in older individuals, especially males; tail thick (to about 35 cm), about 1/4 of body length; hind feet flattened and webbed, outer toe longest, with vestigial leathery foot pads; front feet relatively small and round; ear pinnae small; to about 1.5 m in total length; adult males usually 25-40 kg, females usually 15-25 kg.