Animal Profiles
Mammals

River Otter

Lontra canadensis

Living

Living individuals or members of this group exist today. This does not mean they are safe from extinction.

The North American river otter is a streamlined predator that uses both inland waterways and coastal habitats. Dense fur helps keep it insulated while swimming.

Lontra canadensis (river otter)

At a glance

Location
North American river otters inhabit suitable waterways across much of Canada and the United States. Rivers, lakes, marshes and estuaries provide food and shelter.
Habitat
Rivers and lakes, Wetlands, Coast
Diet
Piscivore
Food
Fish, crayfish and other aquatic animals make up much of the diet.

Classification

Common name
River Otter
Browse group
Mammals
Scientific name or taxon
Lontra canadensis
Taxon rank
species
Order
Carnivora
Family
Mustelidae
Genus
Lontra
Source classification
Mammalia

Taxonomy checked against GBIF. For breeds and hybrids, this describes the listed parent taxon.

Measurements

Size and speed

Weight
5 to 14 kg adult range reported by ADW

Typical adult ranges. Source: Animal Diversity Web.

Three things to know

  • Its feet are fully webbed.
  • Long whiskers help it detect prey.
  • It uses natural cavities or burrows for shelter.

Habitat and range

North American river otters inhabit suitable waterways across much of Canada and the United States. Rivers, lakes, marshes and estuaries provide food and shelter.

Appearance and adaptations

A long body, tapered tail and short legs suit movement through water. Dense dark fur is paler around the throat and underside.

Diet and behaviour

Fish, crayfish and other aquatic animals make up much of the diet. Individuals may live alone or in family groups. Sliding and water play can contribute to social interaction and the development of hunting skills.

Sources

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