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In the UK, the term "weasel" usually refers to the smallest species, the least weasel (M. nivalis), [1] the smallest carnivoran species. [ 2 ] Least weasels vary in length from 173 to 217 mm ( 6 + 3 ⁄ 4 to 8 + 1 ⁄ 2 in), [ 3 ] females being smaller than the males, and usually have red or brown upper coats and white bellies; some populations ...
Genus Mustela – Linnaeus, 1758 – fifteen species Common name Scientific name and subspecies Range Size and ecology IUCN status and estimated population Back-striped weasel. M. strigidorsa Gray, 1855: Parts of southeast Asia: Size: 30–36 cm (12–14 in) long, plus 18–20 cm (7–8 in) tail [83] Habitat: Forest and shrubland [84]
The native distribution and density of extant mustelid species. The Mustelidae ( / m ʌ ˈ s t ɛ l ɪ d iː / ; [ 2 ] from Latin mustela , weasel) are a diverse family of carnivoran mammals, including weasels , badgers , otters , polecats , martens , grisons , and wolverines .
The least weasel is the product of a process begun 5–7 million years ago, when northern forests were replaced by open grassland, thus prompting an explosive evolution of small, burrowing rodents. The weasel's ancestors were larger than the current form, and underwent a reduction in size to exploit the new food source.
Mustelidae, the weasel (mustelid) family, including new- and old-world badgers, ferrets and polecats, fishers, grisons and ratels, martens and sables, minks, river and sea otters, stoats and ermines, tayras and wolverines. Procyonidae, the raccoons and raccoon-like procyonids, including coatimundis, kinkajous, olingos, olinguitos, ringtails and ...
The Siberian weasel builds its nest inside fallen logs, empty stumps, brushwood piles and exposed tree roots. It also uses and enlarges the dens of other species. The length of its burrows ranges from 0.6–4.2 m (2 ft 0 in – 13 ft 9 in) and 0.2–1.3 m (7.9 in – 4 ft 3.2 in) deep.
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The long-tailed weasel was originally described in the genus Mustela with the name Mustela frenata by Hinrich Lichtenstein in 1831. [3] [4] In 1993, the classification, Mustela frenata, was accepted into the second edition of the Mammal species of the world: a taxonomic and geographic reference, which was published by the Smithsonian Institution Press. [4]