North American river otter
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The North American river otter, also known as the northern river otter and river otter, is a semiaquatic mammal that is endemic to the North American continent throughout most of Canada and along the
Northern River Otter on Seedskadee NWR
Skull of a North American river otter
The North American river otter's streamlined shape allows it to glide through the water.
The North American river otter's sensitive whiskers allow it to detect prey in murky water.
Eurasian otter
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The Eurasian otter, also known as the European otter, Eurasian river otter, European river otter, common otter, and Old World otter, is a semiaquatic mammal native to Eurasia and the Maghreb. It is th
North American river otter
…consists of a long, tapered tail. Tail lengths range from 30 to 50 cm (12–20 in). Large males can exceed a weight of 15 kg (33 lb). It differs from the Eurasian otter by its longer neck, narrower visage, the smaller space between the ears, and shorter tail. Males and female river otters show different nonsexual…
Fischotter, Lutra Lutra
Skull
Two otters in Korkeasaari Zoo, Helsinki, Finland
Otter feeding on fish