Arctic willow vs Colombian Weasel

Salix arctica compared with Mustela felipei

Key Differences

Arctic willow is Not Evaluated while Colombian Weasel is Vulnerable.

Taxonomic Classification

Rank	Arctic willow	Colombian Weasel
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (Chordates)
Class	Magnoliopsida (Dicots)	Mammalia (Mammals)
Order	Malpighiales (Malpighiales)	Carnivora (Carnivorans)
Family	Salicaceae	Mustelidae (Weasels & Otters)
Genus	Salix	Mustela
Species	Salix arctica	Mustela felipei

Conservation Status

Arctic willow

NE — Not Evaluated

Colombian Weasel

VU — Vulnerable

Physical Characteristics

Attribute	Arctic willow	Colombian Weasel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arctic willow

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Canada, Iceland, Norway, and Sweden.

Colombian Weasel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Arctic willow

The Arctic willow (Salix arctica) is a species in the genus Salix. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

<em>Mustela felipei</em>, the Colombian weasel, is one of the rarest and least-known mustelids in the world, endemic to the Andes of Colombia. This species is assessed as Vulnerable by the IUCN, reflecting genuine conservation concern arising from its extremely restricted range and the continued degradation of Andean cloud forest and montane stream habitats upon which it depends. <em>Mustela felipei</em> is associated with rocky stream margins and humid upland forests, where it is believed to hunt fish, invertebrates, and small vertebrates in a manner consistent with other semi-aquatic weasels. The species was described scientifically only in 1978, and very few individuals have been observed in the wild, meaning that fundamental aspects of its ecology, behaviour, and reproductive biology remain unknown. Its small body size and cryptic habits make field observation exceptionally challenging. The primary threats to this species include deforestation, water pollution, and stream alteration within its narrow elevational range in the Colombian Andes. Biological traits of this species remain poorly documented in the scientific literature.