gray wolf vs Grey worm

Canis lupus compared with Aporrectodea caliginosa

Key Differences

• gray wolf is Critically Endangered while Grey worm is Not Evaluated.

Taxonomic Classification

Rank	gray wolf	Grey worm
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum	Chordata (สัตว์มีแกนสันหลัง)	Annelida (สัตว์พวกหนอนปล้อง)
Class	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Clitellata (Clitellata)
Order	Carnivora (สัตว์กินเนื้อ)	Crassiclitellata (Crassiclitellata)
Family	Canidae (Dogs & Wolves)	Lumbricidae
Genus	Canis (Dogs & Wolves)	Aporrectodea
Species	Canis lupus	Aporrectodea caliginosa

Evolutionary Relationship

gray wolf and Grey worm share a common ancestor at the Kingdom level: Animalia. (สัตว์)

Conservation Status

gray wolf

CR — Critically Endangered

Population: ~300.0K

Trend: Stable →

Grey worm

NE — Not Evaluated

Physical Characteristics

Attribute	gray wolf	Grey worm
Diet	Carnivore	—
Average Lifespan	13 years	—
Average Length	1.6 m	—
Average Weight	45.0 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.

Grey worm

Habitat

Native to Africa and Asia and Europe, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Africa (South Africa), Asia (Taiwan), Europe (5 countries), and North America (United States).

gray 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.

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States