Costa Rica nelson frog vs Polar bear

Ctenophryne aterrima compared with Ursus maritimus

Key Differences

• Costa Rica nelson frog is Least Concern while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Costa Rica nelson frog	Polar bear
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class	Amphibia (Anfíbios)	Mammalia (mamíferos)
Order	Anura (Frogs & Toads)	Carnivora (carnívoros)
Family	Microhylidae	Ursidae (Bears)
Genus	Ctenophryne	Ursus (Bears)
Species	Ctenophryne aterrima	Ursus maritimus

Evolutionary Relationship

Costa Rica nelson frog and Polar bear share a common ancestor at the Phylum level: Chordata. (cordados)

Conservation Status

Costa Rica nelson frog

LC — Least Concern

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Costa Rica nelson frog	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Costa Rica nelson frog

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

Found in Colombia.

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.