MNN Galleries

River otters: Hardest-working clowns in the water

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

Photo: Jaymi Heimbuch

6 of 16

Nothing like a cozy den

River otters build dens close to the water line, with multiple tunnels. Here, a river otter gathers reeds that it takes to an underwater entrance to a den site. Nothing like a pile of fresh reeds to make a soft, comfortable bed.