Polar bear vs Spruce Budworm

Ursus maritimus compared with Choristoneura fumiferana

Key Differences

• Polar bear is Vulnerable while Spruce Budworm is Not Evaluated.

Taxonomic Classification

Rank	Polar bear	Spruce Budworm
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Insecta (Insects)
Order	Carnivora (Carnivorans)	Lepidoptera (Butterflies & Moths)
Family	Ursidae (Bears)	Tortricidae
Genus	Ursus (Bears)	Choristoneura
Species	Ursus maritimus	Choristoneura fumiferana

Evolutionary Relationship

Polar bear and Spruce Budworm share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Spruce Budworm

NE — Not Evaluated

Physical Characteristics

Attribute	Polar bear	Spruce Budworm
Diet	Carnivore	—
Average Lifespan	25 years	—
Average Length	2.4 m	—
Average Weight	450.0 kg	—

Habitat & Geographic Range

Polar bear

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.

Spruce Budworm

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Canada, Denmark, Norway, and United States.

Polar bear

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.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway