Common Seal vs gray wolf

Phoca vitulina compared with Canis lupus

Key Differences

• Common Seal is Near Threatened while gray wolf is Critically Endangered.
• Common Seal is 1.8x heavier than gray wolf.
• Common Seal lives longer (30 years vs 13 years).

Taxonomic Classification

Rank	Common Seal	gray wolf
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Chordata (động vật có dây sống)	Chordata (động vật có dây sống)
Class same	Mammalia (lớp Thú)	Mammalia (lớp Thú)
Order	Pinnipedia (Seals & Sea Lions)	Carnivora (bộ Ăn thịt)
Family	Phocidae (True Seals)	Canidae (Dogs & Wolves)
Genus	Phoca (Harbor Seals)	Canis (Dogs & Wolves)
Species	Phoca vitulina	Canis lupus

Evolutionary Relationship

Common Seal and gray wolf share a common ancestor at the Class level: Mammalia. (lớp Thú)

Conservation Status

Common Seal

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

gray wolf

CR — Critically Endangered

Population: ~300.0K

Trend: Stable →

Physical Characteristics

Attribute	Common Seal	gray wolf
Diet	Carnivore	Carnivore
Average Lifespan	30 years	13 years
Average Length	1.7 m	1.6 m
Average Weight	80.0 kg	45.0 kg

Habitat & Geographic Range

Common Seal

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (7 countries) and North America (United States). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

Common Seal

The most widely distributed pinniped, harbor seals inhabit temperate and subarctic coastal waters of both the North Atlantic and North Pacific. Adults reach up to 130 kg and spend roughly equal time at sea hunting fish, squid, and crustaceans and hauling out on beaches or rocks to rest. Their large, expressive eyes are adapted for underwater vision in low light. Harbor seals are a critical food source for orcas, sharks, and polar bears.

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 6 countries:

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