North American River Otter (Lutra canadensis)

​These playful mammals are able to close their ears and nostrils when swimming underwater. They can remain underwater for six to eight minutes! When they swim they use their tails and back legs to push them through the water at speeds of up to 18 mph! River otters appear playful and cute however; they have very sharp teeth and powerful jaws.

Visit Tahu and Sedge at the Zoo in their habitat sponsored by Bridgeport Hospital, or check them out on our Otter Cam!

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​Description

A river otter’s long narrow body can range in length from 18″- 42 “, not including the tail. Weight can vary from 8 to 40 pounds with males larger than females. The brownish fur is short and dense. The muscular tail is thick at the base and tapers to the tip.

​Habitat

Ponds and lakes in wooded areas, rivers, marshes, estuaries and marine coasts.

Range

North America except in the Midwest and portions of southwestern US.

​Diet

Mostly fish, but also crabs, crayfish, waterfowl, eggs, turtles, fresh water clams and small mammals.

​Life Span

15 years in the wild and 23 years in captivity.

​Family Life

They are social animals except during the breeding season. Females have litters of 1-4 young (pups) after a 285-380 day gestation period. The pups stay with the female for one year.

Status

As a group, otters have suffered from habitat loss, water pollution and fur trapping. Their numbers are on the rise due to reintroduction programs in parts of the US, better water quality, and protection of their habitat.

​Did You Know? Mink and River Otters are both mustelids and share many characteristics. Mustelids are fur-bearing carnivores that inhabit terrestrial and aquatic regions throughout the world, except Australia, Antarctica, and most oceanic islands. Recently, the American mink and their tracks have been observed by the banks of the Pequonnock River! Learn more about the American mink here.