Wolf vs Nile Crocodile

Canis lupus compared with Crocodylus niloticus

Key Differences

• Wolf is Critically Endangered while Nile Crocodile is Least Concern.
• Nile Crocodile is 16.7x heavier than Wolf.
• Nile Crocodile lives longer (70 years vs 13 years).

Taxonomic Classification

Rank	Wolf	Nile Crocodile
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class	Mammalia (Säugetiere)	Reptilia (Reptilien)
Order	Carnivora (Raubtiere)	Crocodylia (Crocodilians)
Family	Canidae (Dogs & Wolves)	Crocodylidae (Crocodiles)
Genus	Canis (Dogs & Wolves)	Crocodylus (True Crocodiles)
Species	Canis lupus	Crocodylus niloticus

Evolutionary Relationship

Wolf and Nile Crocodile share a common ancestor at the Phylum level: Chordata. (Chordatiere)

Conservation Status

Wolf

CR — Critically Endangered

Population: ~300.0K

Trend: Stable →

Nile Crocodile

LC — Least Concern

Population: ~500.0K

Trend: Stable →

Physical Characteristics

Attribute	Wolf	Nile Crocodile
Diet	Carnivore	Carnivore
Average Lifespan	13 years	70 years
Average Length	1.6 m	5.0 m
Average Weight	45.0 kg	750.0 kg

Habitat & Geographic Range

Wolf

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, deserts and xeric shrublands, and tropical and subtropical dry broadleaf forests, among 13 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Seychelles), Asia (Japan), Europe (5 countries), North America (7 countries), Oceania and the Pacific (Marshall Islands, Vanuatu), and South America (5 countries). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Nile Crocodile

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

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

Wolf

The most widely distributed wild canid, gray wolves range from North America across Eurasia in diverse habitats including tundra, forests, and grasslands. Highly social animals living in family packs led by a dominant breeding pair. As keystone predators, wolves regulate prey populations and profoundly shape ecosystem structure, as demonstrated by their reintroduction in Yellowstone. Once heavily persecuted, populations are recovering in many regions.

Nile Crocodile

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