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River otters: Hardest-working clowns in the water

By: Jaymi Heimbuch on Sept. 13, 2013, 1:17 p.m.
river otters

Photo: Jaymi Heimbuch

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Predator and prey

Fast, agile swimmers with powerful jaws and sharp teeth, river otters have few natural predators when they are in the water. On land, however, they must be wary of predators such as bobcats, coyotes, mountain lions, wolves, black bears and foxes. Even domestic dogs pose a threat to the river otter when on land.