1. Polar Bears Resort to Cannibalism as Arctic Ice Shrinks
... basic functions like feeding, mating and giving birth. American and Canadian scientists reviewed three examples of polar bears preying on each other from January to April 2004, in northern Alaska and western Canada. In one incident, a bear killed a female of the species in her den shortly after ... she had given birth. In the wild, polar bears do kill each other for population regulation, to exert their dominance, and to gain reproductive advantage. But killing one another for food is much less common. Steven Amstrup, of the U.S. Geological Survey ... incidents of polar bears stalking, ...
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