gray wolf vs Tube-building worm

Canis lupus compared with Hydroides elegans

Key Differences

• gray wolf is Critically Endangered while Tube-building worm is Not Evaluated.

Taxonomic Classification

Rank	gray wolf	Tube-building worm
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Annelida (Segmented Worms)
Class	Mammalia (Mammals)	Polychaeta (Polychaeta)
Order	Carnivora (Carnivorans)	Sabellida (Sabellida)
Family	Canidae (Dogs & Wolves)	Serpulidae
Genus	Canis (Dogs & Wolves)	Hydroides
Species	Canis lupus	Hydroides elegans

Evolutionary Relationship

gray wolf and Tube-building worm share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

gray wolf

CR — Critically Endangered

Population: ~300.0K

Trend: Stable →

Tube-building worm

NE — Not Evaluated

Physical Characteristics

Attribute	gray wolf	Tube-building 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.

Tube-building worm

Habitat

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

Range

Widely distributed across Africa (4 countries), Asia (7 countries), Europe (12 countries), North America (Mexico, United States), Oceania and the Pacific (Australia, New Zealand), and South America (Argentina, Brazil).

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 7 countries:

🇦🇷 Argentina 🇧🇪 Belgium 🇯🇵 Japan 🇳🇴 Norway 🇷🇺 Russia 🇸🇪 Sweden 🇺🇸 United States