If the river otter is the most aquatic member of the mustelid family, and weasels represent the terrestrial branch of the clan, the American mink is the adept middle child, taking advantage of its adaptations both in the water and on land to make a living.
Like both otters and weasels, mink have long, sleek bodies, the sharp teeth of a predator, and small – but keen – ears and eyes. Their fur – long a fashion staple – is a combination of oily guard hairs, which afford some water-repellency, and an undercoat that grows thick in winter to provide warmth. It’s a common makeup in winter-active mammals – and a bit like us humans wearing a waterproof Gore-Tex shell over layers of insulating polypro or wool. » Continue Reading.