They feed primarily on amphibians and will range up to five miles up and down-river each day while hunting. The tail drag is sometimes visible in an otter trail. Often, their prints are found in groups of four. Otter scat commonly contains fish scales and is often found on prominent landmarks near water, including rocks, stumps, and boat docks. See scat photo below.
Otters roll on river banks and leave a musky scent.
Dens are dug into banks, with underwater or above ground entrances. Nests are made inside the den out of leaves, sticks, and grass. Otters will often travel overland, far from water. They are active during daylight. Otters have two to three pups in late spring.