Bent-grass nematode vs Polar bear

Anguina agrostis compared with Ursus maritimus

Key Differences

• Bent-grass nematode is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Bent-grass nematode	Polar bear
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum	Nematoda (นีมาโทดา)	Chordata (สัตว์มีแกนสันหลัง)
Class	Chromadorea (Chromadorea)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Rhabditida (Rhabditida)	Carnivora (สัตว์กินเนื้อ)
Family	Anguinidae	Ursidae (Bears)
Genus	Anguina	Ursus (Bears)
Species	Anguina agrostis	Ursus maritimus

Evolutionary Relationship

Bent-grass nematode and Polar bear share a common ancestor at the Kingdom level: Animalia. (สัตว์)

Conservation Status

Bent-grass nematode

NE — Not Evaluated

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Bent-grass nematode	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Bent-grass nematode

Habitat

Native to Asia and Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across China, Denmark, and United States.

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.

Bent-grass nematode

The Bent-grass nematode (Anguina agrostis) is a species in the genus Anguina. Native to Asia and Europe and North America, inhabiting ecosystems characteristic of the region.

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.