gray wolf vs Nile Crocodile

Canis lupus compared with Crocodylus niloticus

Key Differences

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

Taxonomic Classification

Rank	gray wolf	Nile Crocodile
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class	Mammalia (哺乳動物)	Reptilia (爬行纲)
Order	Carnivora (食肉目)	Crocodylia (Crocodilians)
Family	Canidae (Dogs & Wolves)	Crocodylidae (Crocodiles)
Genus	Canis (Dogs & Wolves)	Crocodylus (True Crocodiles)
Species	Canis lupus	Crocodylus niloticus

Evolutionary Relationship

gray wolf and Nile Crocodile share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

gray wolf

CR — Critically Endangered

Population: ~300.0K

Trend: Stable →

Nile Crocodile

LC — Least Concern

Population: ~500.0K

Trend: Stable →

Physical Characteristics

Attribute	gray 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

gray 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.

gray wolf

灰狼是分布最广的野生犬科动物，分布范围从北美横跨欧亚大陆，栖息于冻原、森林和草原等多种生境。高度社会化的动物，以由占优势的繁殖对领导的家族群体生活。作为关键捕食者，狼调节猎物种群并深刻影响生态系统结构，黄石公园的重引入项目对此有充分证明。曾遭到严重迫害，但目前许多地区的种群正在恢复。

Nile Crocodile

尼罗鳄是世界上最大的爬行动物之一，广泛分布于撒哈拉以南非洲地区。