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Weasels feed on small mammals and have from time to time been considered vermin because some species took poultry from farms or rabbits from commercial warrens. They do, on the other hand, eat large numbers of rodents. Their range spans Europe, North America, much of Asia and South America, and small areas in North Africa.
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.
Least weasel: Mustela nivalis: Uncommon M. nivalis allegheniensis: Western two-thirds American ermine: Mustela richardsonii: Uncommon Statewide except southwest Long-tailed weasel: Neogale frenata: Common Statewide Mink: Neogale vison: Common N. vison mink: Statewide Fisher: Pekania pennanti: Reintroduced North central Badger: Taxidea taxus: Rare
4 Hares and rabbits. 5 Pikas. 6 Shrews. 7 Beaver. 8 Squirrels. 9 Pocket gophers. 10 Mice. 11 Jumping mice. ... Long-tailed weasel, Neogale frenata, willows to spruce ...
Family Mustelidae (otters, weasels and relatives) North American river otter (Lontra canadensis) RI; Least weasel (Mustela nivalis) U; American ermine (Mustela richardsonii) U [11] Long-tailed weasel (Neogale frenata) U; American mink (Neogale vison) U; Fisher (Pekania pennanti) RI; Family Mephitidae (skunks) Striped skunk (Mephitis mephitis) C
Stone walls, built largely in the 19th century, provide more welcoming homes to certain species; and mammals from Europe, including the house mouse and Norway rat, and from elsewhere (such as the coyote) can create a different competitive environment for some species and a different food source for some (the American barn owl, for instance, can ...
Rabbits can happily eat fennel bulbs and stalks. It has a naturally sweet, licorice-like taste that makes it so appealing. It is high in fiber as well as vitamin C-, potassium- and manganese-rich.
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.