Giant Otter vs Lesser Crested Tern

Pteronura brasiliensis compared with Thalasseus bengalensis

Key Differences

• Giant Otter is Endangered while Lesser Crested Tern is Not Evaluated.

Taxonomic Classification

Rank	Giant Otter	Lesser Crested 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	Pteronura	Thalasseus
Species	Pteronura brasiliensis	Thalasseus bengalensis

Evolutionary Relationship

Giant Otter and Lesser Crested Tern share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Giant Otter

EN — Endangered

Lesser Crested Tern

NE — Not Evaluated

Physical Characteristics

Attribute	Giant Otter	Lesser Crested Tern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Giant Otter

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Lesser Crested Tern

Habitat

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

Range

Distributed across Norway and Sweden.