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The various species of weasels include: northern river otter, American mink, long-tailed weasel, ermine or short-tailed weasel, fisher (in New England is known as a fisher cat), and the American marten (Known as pine marten in some areas of New England even though the pine marten is a separate species.).
American ermine, Mustela richardsonii Short-tailed weasel. Distribution: Maine, New Hampshire, Vermont, Massachusetts, Connecticut, and Rhode Island. Subspecies: Mustela richardsonii cicognanii according to Hall (1981) and Whitaker and Hamilton (1998). Long-tailed weasel, Neogale frenata Long-tailed weasel
Mustelidae is a family of mammals in the order Carnivora, which includes weasels, badgers, otters, ferrets, martens, minks, and wolverines, and many other extant and extinct genera. A member of this family is called a mustelid; Mustelidae is the largest family in Carnivora, and its extant species are divided into eight subfamilies .
Sthenictis sp. (American Museum of Natural History). Mustelids vary greatly in size and behaviour. The smaller variants of the least weasel can be under 20 cm (8 in) in length, while the giant otter of Amazonian South America can measure up to 1.7 m (5 ft 7 in) and sea otters can exceed 45 kg (99 lb) in weight.
Although superficially similar to the European mink, studies indicate the European mink's closest relative is the Siberian weasel (kolonok) of Asia. The American mink has been recorded to hybridize with European minks and polecats in captivity, though the hybrid embryos of the American and European minks are usually reabsorbed. [7]
Environmental groups, which originally petitioned the government to list wolverines as threatened in 1994, hailed Wednesday's move as long overdue. ... making it a close cousin of weasels, ferrets ...
Mustelinae is a subfamily of family Mustelidae, including weasels, ferrets, and minks. [ 1 ] [ 2 ] It was formerly defined in a paraphyletic manner to also include wolverines , martens , and many other mustelids, to the exclusion of the otters ( Lutrinae ).
Skulls of a long-tailed weasel (top), a stoat (bottom left) and least weasel (bottom right), as illustrated in Merriam's Synopsis of the Weasels of North America. The long-tailed 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.