Common Seal vs Four-toed Hedgehog

Phoca vitulina compared with Atelerix albiventris

Key Differences

• Common Seal is Near Threatened while Four-toed Hedgehog is Least Concern.

Taxonomic Classification

Rank	Common Seal	Four-toed Hedgehog
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Pinnipedia (Seals & Sea Lions)	Erinaceomorpha (Erinaceomorpha)
Family	Phocidae (True Seals)	Erinaceidae
Genus	Phoca (Harbor Seals)	Atelerix
Species	Phoca vitulina	Atelerix albiventris

Evolutionary Relationship

Common Seal and Four-toed Hedgehog share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Common Seal

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

Four-toed Hedgehog

LC — Least Concern

Physical Characteristics

Attribute	Common Seal	Four-toed Hedgehog
Diet	Carnivore	—
Average Lifespan	30 years	—
Average Length	1.7 m	—
Average Weight	80.0 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.

Four-toed Hedgehog

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Ecuador and Spain.

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.