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 (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Reptilia (爬虫類)
Order	Carnivora (ネコ目)	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. (脊索動物)

表示 Phylum: Chordata

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

最も広い分布域を持つ野生のイヌ科動物であるハイイロオオカミは、北アメリカからユーラシアにかけてのツンドラ、森林、草原などの多様な生息地に分布します。優位な繁殖ペアに率いられた家族単位の群れで生活する高度に社会的な動物です。キーストーン捕食者として獲物個体群を調整し、生態系の構造を根本的に形成することは、イエローストーンでの再導入により実証されています。かつて激しく迫害されましたが、多くの地域で個体群は回復しつつあります。