Monday, 14 November 2011

Lemmings

Lemmings are small rodents with an unusual reputation. Contrary to popular belief, lemmings do not commit mass suicide when they . It is a misconception fuelled by the media and video game industries. Having said that, individuals belonging to some species will leave a population once it becomes too big in search of a new home. When that happens, obstacles such as wide and , can be the cause of many fatalities.


Lemming populations also undergo periodic boom and bust cycles. Although lemmings are similar to other , they differ in their bright colours and aggressiveness toward . There are at present 18 species within four groups that include the collared and true lemmings. Usually found in or near the Arctic , lemmings are a crucial part of the diet for predators such as the .

Source: http://www.bbc.co.uk/nature/life/Lemming

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