Atlantic fourhorn octopus vs ours blanc

Pteroctopus tetracirrhus compared with Ursus maritimus

Key Differences

• Atlantic fourhorn octopus is Not Evaluated while ours blanc is Vulnerable.

Taxonomic Classification

Rank	Atlantic fourhorn octopus	ours blanc
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum	Mollusca (mollusques)	Chordata (Chordates)
Class	Cephalopoda (Cephalopods)	Mammalia (mammifères)
Order	Octopoda (Octopuses)	Carnivora (carnivores)
Family	Octopodidae (Common Octopuses)	Ursidae (Bears)
Genus	Pteroctopus	Ursus (Bears)
Species	Pteroctopus tetracirrhus	Ursus maritimus

Evolutionary Relationship

Atlantic fourhorn octopus and ours blanc share a common ancestor at the Kingdom level: Animalia. (animal)

Conservation Status

Atlantic fourhorn octopus

NE — Not Evaluated

ours blanc

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Atlantic fourhorn octopus	ours blanc
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Atlantic fourhorn octopus

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Found in Sweden.

ours blanc

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

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

Atlantic fourhorn octopus

The Atlantic fourhorn octopus (Pteroctopus tetracirrhus) is a species in the genus Pteroctopus. Native to Europe, inhabiting ecosystems characteristic of the region.

ours blanc

The largest land carnivore on Earth, polar bears can exceed 700 kg and are found across Arctic sea ice from Canada to Russia. Highly specialized marine mammals that rely on sea ice to hunt ringed and bearded seals. Excellent swimmers capable of covering vast distances in open water. Listed as Vulnerable, with populations under severe pressure from rapid Arctic sea ice loss due to climate change.