brown bear vs Giant Otter

Ursus arctos compared with Pteronura brasiliensis

Key Differences

• brown bear is Extinct while Giant Otter is Endangered.

Taxonomic Classification

Rank	brown bear	Giant Otter
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order same	Carnivora (Carnivorans)	Carnivora (Carnivorans)
Family	Ursidae (Bears)	Mustelidae (Weasels & Otters)
Genus	Ursus (Bears)	Pteronura
Species	Ursus arctos	Pteronura brasiliensis

Evolutionary Relationship

brown bear and Giant Otter share a common ancestor at the Order level: Carnivora. (Carnivorans)

Conservation Status

brown bear

EX — Extinct

Population: ~200.0K

Trend: Stable →

Giant Otter

EN — Endangered

Physical Characteristics

Attribute	brown bear	Giant Otter
Diet	Omnivore	—
Average Lifespan	25 years	—
Average Length	2.0 m	—
Average Weight	300.0 kg	—

Habitat & Geographic Range

brown bear

Habitat

Typically found in a wide range of habitat types.

Range

Found across Europe (6 countries).

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.

brown bear

The world's most widely distributed bear species, brown bears range from North America and Europe across Russia to Japan, occupying forests, tundra, and alpine meadows. Adults can weigh up to 700 kg in coastal Alaskan populations. Omnivores that consume berries, roots, fish, and carrion, brown bears are a keystone species that distribute nutrients across landscapes. Most populations are stable, though some subspecies are threatened.