Canadian Otter vs River Tern

Lontra canadensis compared with Sterna aurantia

Key Differences

• Canadian Otter is Least Concern while River Tern is Vulnerable.

Taxonomic Classification

Rank	Canadian Otter	River Tern
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Carnivora (Carnivorans)	Charadriiformes (Charadriiformes)
Family	Mustelidae (Weasels & Otters)	Laridae
Genus	Lontra	Sterna
Species	Lontra canadensis	Sterna aurantia

Evolutionary Relationship

Canadian Otter and River Tern share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Canadian Otter

LC — Least Concern

River Tern

VU — Vulnerable

Physical Characteristics

Attribute	Canadian Otter	River Tern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Canadian Otter

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in United States.

River Tern

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Canadian Otter

The Canadian Otter (Lontra canadensis) is a species in the genus Lontra. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.