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River otters: Hardest-working clowns in the water

river otter eating crustacean

Photo: Jaymi Heimbuch

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Bone-crushing teeth

Once prey is caught, river otters use their powerful jaws and sharp teeth to make short work of their meal, even crustaceans. They have canines that deliver a lethal bite, and molars that can crush bones and the shells of mollusks.