North American River Otter

Lutra canadensis

Ranging over much of North America, the river otter survives anywhere with access to abundant prey and clean water. With a streamlined body, webbed feet, muscular tail, flexible body, and waterproof fur, otters are designed for swimming in search of fish, crayfish, and other aquatic creatures to eat. Otters den in a riverbank burrow, under a rock pile, in a thicket, or even in another animal’s home such as a beaver’s lodge. The river otter is famous for its playful antics – mud sliding, water sports and manipulating objects – which increases coordination and sharpens hunting skills.

  • An otter has 450,000 hairs per square inch.
  • While underwater, an otter’s ears and nostrils close up tight to keep out water.
  • An otter can dive as deep as 60 feet.
  • An otter can hold its breath underwater for eight minutes.

Fact File

  • Length: 3.2 to 3.9 ft
  • Weight: 11 to 33 lbs
  • Lifespan: 10 to 15 yrs
  • Habitat: Freshwater rivers, streams, lakes, ponds, marshes, swamps, and coastal waters
  • Prey: Fish, crayfish, ducklings, turtles, and other small animals

River Otters in Action

A Weasel in Water :

Otters are the only aquatic members of the weasel family.

Range:

Canada and the United States

Otter Reproduction

Scientists at the Zoo’s Lindner Center for Conservation and Research of Endangered Wildlife (CREW) are studying the reproductive physiology of otters to improve captive breeding.

You Ought to See Our Otters

River otters frolic and play as you talk with zookeepers during a Meet-a-Zookeeper program at Wolf Woods at 12:30pm (Wednesday through Sunday) through the end of October.