Arctic fox vs Ruff

Vulpes lagopus compared with Calidris pugnax

Key Differences

• Arctic fox is Critically Endangered while Ruff is Least Concern.

Taxonomic Classification

Rank	Arctic fox	Ruff
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Aves (鳥類)
Order	Carnivora (ネコ目)	Charadriiformes (チドリ目)
Family	Canidae (Dogs & Wolves)	Scolopacidae
Genus	Vulpes (Foxes)	Calidris
Species	Vulpes lagopus	Calidris pugnax

Evolutionary Relationship

Arctic fox and Ruff share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Arctic fox

CR — Critically Endangered

Ruff

LC — Least Concern

Physical Characteristics

Attribute	Arctic fox	Ruff
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arctic fox

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

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

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).

Arctic fox

The Arctic fox (Vulpes lagopus) is a species in the genus Vulpes. It is currently classified as Critically Endangered on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Ruff

Ruff（Calidris pugnax）は IUCN レッドリストで軽度懸念（LC）に分類されている。分布域全体に広く分布し個体数も豊富で、個体群は安定しており差し迫った保全上の懸念はない。

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden