The North American river otter, also known as the northern river otter or the common otter, is a semiaquatic mammal endemic to the North American continent found in and along its waterways and coasts. River otters are a dynamic, intelligent and adaptive species that can continue to exhibit play behaviour even into adulthood.
The North American river otter is a stocky animal of 5 to 14 kilograms (11 to 31 lb), with short legs, a muscular neck no smaller than the head, and an elongated body that is broadest at the hips. Its body length ranges from 66 to 107 centimetres (26 to 42 in). About one-third of the animal’s total length consists of a long, tapered tail. Tail lengths range from 30 to 50 centimetres (12 to 20 in)…
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