Atlantic Gray Seal vs North American porcupine

Halichoerus grypus compared with Erethizon dorsatus

Key Differences

• Atlantic Gray Seal is Vulnerable while North American porcupine is Least Concern.

Taxonomic Classification

Rank	Atlantic Gray Seal	North American porcupine
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Pinnipedia (Seals & Sea Lions)	Rodentia (Rodents)
Family	Phocidae (True Seals)	Erethizontidae
Genus	Halichoerus	Erethizon
Species	Halichoerus grypus	Erethizon dorsatus

Evolutionary Relationship

Atlantic Gray Seal and North American porcupine share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Atlantic Gray Seal

VU — Vulnerable

North American porcupine

LC — Least Concern

Physical Characteristics

Attribute	Atlantic Gray Seal	North American porcupine
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Atlantic Gray Seal

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Denmark, Norway, Portugal, and Sweden. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

North American porcupine

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in United States.

Atlantic Gray Seal

The Atlantic Gray Seal (Halichoerus grypus) is a species in the genus Halichoerus. It is currently classified as Vulnerable on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.