Costa Rica nelson frog vs Eisbär

Ctenophryne aterrima compared with Ursus maritimus

Key Differences

• Costa Rica nelson frog is Least Concern while Eisbär is Vulnerable.

Taxonomic Classification

Rank	Costa Rica nelson frog	Eisbär
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class	Amphibia (Amphibien)	Mammalia (Säugetiere)
Order	Anura (Froschlurche)	Carnivora (Raubtiere)
Family	Microhylidae	Ursidae (Bears)
Genus	Ctenophryne	Ursus (Bears)
Species	Ctenophryne aterrima	Ursus maritimus

Evolutionary Relationship

Costa Rica nelson frog and Eisbär share a common ancestor at the Phylum level: Chordata. (Chordatiere)

Conservation Status

Costa Rica nelson frog

LC — Least Concern

Eisbär

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Costa Rica nelson frog	Eisbär
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.

Eisbär

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.

Eisbär

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.