Release Date: November 9, 2017 This content is archived. BUFFALO, N.Y. — A massive, wolf-sized otter that lived about 6 million years ago may have been a dominant predator in its time, according to a ...

River otters engage in activities collectively designated as play, for example, repeated touching, shoving, tossing, and manipulating of prey, stones or other objects, or tobogganing down mud or snow ...