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Lemming behaviour and appearance are markedly different from those of other rodents, which are inconspicuously coloured and try to conceal themselves from their predators. Lemmings, by contrast, are conspicuously coloured and behave aggressively toward predators and even human observers.
The Canadian lemming was formerly thought to be a subspecies of the Siberian brown lemming (Lemmus sibiricus), but those were split into two distinct species. They were still considered the same species as the Beringian lemming ( Lemmus nigripes ); the combined species was named the North American brown lemming with the scientific name L ...
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.
Collared lemming lying on ground. The northern collared lemming or Nearctic collared lemming (Dicrostonyx groenlandicus), sometimes called the Peary Land collared lemming in Canada, is a small lemming found in Arctic North America and Wrangel Island. At one time, it was considered to be a subspecies of the Arctic lemming (Dicrostonyx torquatus).
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 1998).
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]
The southern bog lemming (Synaptomys cooperi) is a small North American lemming. Its range overlaps with the other species in genus Synaptomys , the northern bog lemming , in southeastern Canada , but extends farther south.
The Alaska subspecies of moose (Alces alces gigas) is the largest in the world; adult males weigh 1,200 to 1,600 pounds (542–725 kg), and adult females weigh 800 to 1,300 pounds (364–591 kg) [43] Alaska's substantial moose population is controlled by predators such as bears and wolves, which prey mainly on vulnerable calves, as well as by ...