Four-toed Hedgehog vs Laysan Duck

Atelerix albiventris compared with Anas laysanensis

Key Differences

• Four-toed Hedgehog is Least Concern while Laysan Duck is Critically Endangered.

Taxonomic Classification

Rank	Four-toed Hedgehog	Laysan Duck
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Chordata (động vật có dây sống)	Chordata (động vật có dây sống)
Class	Mammalia (lớp Thú)	Aves (chim)
Order	Erinaceomorpha (Erinaceomorpha)	Anseriformes (bộ Ngỗng)
Family	Erinaceidae	Anatidae
Genus	Atelerix	Anas
Species	Atelerix albiventris	Anas laysanensis

Evolutionary Relationship

Four-toed Hedgehog and Laysan Duck share a common ancestor at the Phylum level: Chordata. (động vật có dây sống)

Conservation Status

Four-toed Hedgehog

LC — Least Concern

Laysan Duck

CR — Critically Endangered

Physical Characteristics

Attribute	Four-toed Hedgehog	Laysan Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Four-toed Hedgehog

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Ecuador and Spain.

Laysan Duck

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Belgium, France, Netherlands, Norway, and United Kingdom. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Laysan Duck

Laysan Duck (Anas laysanensis) is classified as Critically Endangered (CR) on the IUCN Red List. Facing an extremely high risk of extinction in the wild due to severe population decline and habitat loss.