Perrin’s Beaked Whale vs Ruff

Mesoplodon perrini compared with Calidris pugnax

Key Differences

• Perrin’s Beaked Whale is Endangered while Ruff is Least Concern.

Taxonomic Classification

Rank	Perrin’s Beaked Whale	Ruff
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Cetacea (Whales & Dolphins)	Charadriiformes (Charadriiformes)
Family	Hyperoodontidae	Scolopacidae
Genus	Mesoplodon	Calidris
Species	Mesoplodon perrini	Calidris pugnax

Evolutionary Relationship

Perrin’s Beaked Whale and Ruff share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Perrin’s Beaked Whale

EN — Endangered

Ruff

LC — Least Concern

Physical Characteristics

Attribute	Perrin’s Beaked Whale	Ruff
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Perrin’s Beaked Whale

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Ruff

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), North America (United States), and South America (Colombia, Venezuela).

Ruff

Ruff (Calidris pugnax) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.