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A lemming is a small rodent, usually found in or near the Arctic in tundra biomes.Lemmings form the subfamily Arvicolinae (also known as Microtinae) together with voles and muskrats, which form part of the superfamily Muroidea, which also includes rats, mice, hamsters and gerbils.
Synaptomys is a genus of North American lemmings. These animals live in wet forested and open areas. They are small, cylindrical rodents with large heads and short ears, legs, and tails. They eat green vegetation such as grasses and sedges. They are often found in colonies.
The Arctic lemming (Dicrostonyx torquatus) is a species of rodent in the family Cricetidae. Although generally classified as a "least concern" species, the Novaya Zemlya subspecies (Dicrostonyx torquatus ungulatus) is considered a vulnerable species under Russian nature conservation legislation (included in Red Book of Russian Federation since ...
The Norway lemming, also known as the Norwegian lemming (Lemmus lemmus) is a common species of lemming found in northern Fennoscandia, where it is the only vertebrate species endemic to the region. The Norway lemming dwells in tundra and fells , and prefers to live near water.
Arctic foxes generally eat any small animal they can find, including lemmings, voles, other rodents, hares, birds, eggs, fish, and carrion. They scavenge on carcasses left by larger predators such as wolves and polar bears , and in times of scarcity also eat their feces .
They feed mainly on grass shoots and will also eat tundra grass, sedge, moss, bark, berries, lichens, and roots. Predators include most carnivores and certain birds, and some evidence suggests caribou may sometimes eat them. In years when the brown lemming is scarce, some predators, such as the Arctic fox, may be unable to reproduce.
The northern bog lemming lives in wet habitats in North America and is omnivorous, eating herbaceous material and invertebrates. [4] They are thought to be extremely sociable animals and sexually mature at around 6 weeks old. Predators include most medium to larger sized carnivorous and omnivorous mammals that eat smaller mammals. [5]
It eats different parts of plants. This includes seeds. It reaches sexual maturity at the age of six weeks. It can produce up to six broods in a year, with five or six young in each. Under the correct conditions, reproduction continues throughout the year. The amount of steppe lemmings differs based on the climate and resources available.