Northern rat flea vs Polar bear

Nosopsyllus fasciatus compared with Ursus maritimus

Key Differences

• Northern rat flea is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Northern rat flea	Polar bear
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (artrópode)	Chordata (cordados)
Class	Insecta (inseto)	Mammalia (mamíferos)
Order	Siphonaptera (Pulga)	Carnivora (carnívoros)
Family	Ceratophyllidae	Ursidae (Bears)
Genus	Nosopsyllus	Ursus (Bears)
Species	Nosopsyllus fasciatus	Ursus maritimus

Evolutionary Relationship

Northern rat flea and Polar bear share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Northern rat flea

NE — Not Evaluated

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Northern rat flea	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Northern rat flea

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Widely distributed across Asia (Taiwan), Europe (23 countries), and North America (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.

Polar bear

O maior carnivoro terrestre da Terra, o urso-polar pode ultrapassar 700 kg e e encontrado pelo gelo marinho artico, do Canada ate a Russia. Mamiferos marinhos altamente especializados que dependem do gelo marinho para cacas de focas e focas-barbadas. Excelentes nadadores capazes de percorrer grandes distancias em aguas abertas. Classificado como Vulneravel, com populacoes sob severa pressao devido a rapida perda de gelo marinho artico causada pelas mudancas climaticas.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway