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North American River Otter (Lontra canadensis) wildlife photograph

Field guide · rare

North American River Otter

Sleek, playful, and built for freshwater — the river otter of US and Canadian waterways.

Least Concern

Lontra canadensis

Overview

North American river otters are streamlined freshwater hunters: long whiskered faces, powerful tails, and a talent for sliding down muddy banks. They eat fish and crayfish in clean rivers and lakes from Florida to Alaska.

Distinct from the UK Eurasian otter and Pacific sea otter already in Catch'Um — this is the continental freshwater card.

Habitat

  • Rivers
  • Lakes
  • Marshes
  • Estuaries

Rivers, lakes, marshes, and coastal waterways across much of the United States and Canada wherever water quality and prey remain strong.

Countries found

Field notes

Field scale for the North American River Otter: length around 65-105 cm including tail; weight 5-14 kg. Typical lifespan: Around 8-15 years in the wild.

When you are scanning habitat, prioritise rivers, lakes, marshes, and estuaries. Those settings are where a clean look and a usable photo are most likely.

Quick ID anchor: Long sleek brown otter with a pale chin/chest and thick tapered tail. Confirm with behaviour and habitat before you log the discovery.

Diet

Fish and crayfish dominate; also frogs, turtles, and small mammals.

Hunt by sight and touch with sensitive whiskers.

Behaviour

Often active by day in quiet waters; playful sliding and social wrestling.

Mark territories along banks with latrines.

How to identify

Long sleek brown otter with a pale chin/chest and thick tapered tail.

Smaller than a sea otter; more rounded head than a mink.

Interesting facts

  1. 01

    Closely related to, but distinct from, Eurasian otters and sea otters.

  2. 02

    Eat fish, crayfish, amphibians, and other aquatic prey.

  3. 03

    Famous for playful sliding and wrestling.

  4. 04

    Dense fur traps insulating air underwater.

  5. 05

    Den in bank burrows or beaver lodges.

  6. 06

    Recovered in many US states after clean-water improvements.

Conservation status

LC: Least Concern

North American river otters are Least Concern and have recolonised many waterways after pollution controls and reintroductions, though they still need clean, connected aquatic habitat.

Sources: IUCN Red List

Keep exploring

Where it lives

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