Nile Crocodile vs Polar bear

Crocodylus niloticus compared with Ursus maritimus

Key Differences

• Nile Crocodile is Least Concern while Polar bear is Vulnerable.
• Nile Crocodile is 1.7x heavier than Polar bear.
• Nile Crocodile lives longer (70 years vs 25 years).

Taxonomic Classification

Rank	Nile Crocodile	Polar bear
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Reptilia (Reptiles)	Mammalia (Mammals)
Order	Crocodylia (Crocodilians)	Carnivora (Carnivorans)
Family	Crocodylidae (Crocodiles)	Ursidae (Bears)
Genus	Crocodylus (True Crocodiles)	Ursus (Bears)
Species	Crocodylus niloticus	Ursus maritimus

Evolutionary Relationship

Nile Crocodile and Polar bear share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Nile Crocodile

LC — Least Concern

Population: ~500.0K

Trend: Stable →

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Nile Crocodile	Polar bear
Diet	Carnivore	Carnivore
Average Lifespan	70 years	25 years
Average Length	5.0 m	2.4 m
Average Weight	750.0 kg	450.0 kg

Habitat & Geographic Range

Nile Crocodile

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Distributed across Egypt, Kenya, Madagascar, South Africa, and Tanzania.

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.

Nile Crocodile

The Nile crocodile is one of the largest reptiles in the world and is found throughout sub-Saharan Africa.

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.