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One of the animals at risk of extincting are polar bears living in the Arctic. Due to the global warming, their natural environment - ice caps - melt. The amount of food drops and the place where they are able to hunt also. Most of the bears live in Canada/Alaska, where their environment might melt as well.  These bears have white fur, small ears, a small head, big paws, thick coat of fur and a lot of fat. This factors help them adapt to the cold surrounding. They feed with fish, reindeers, birds, carrion and seals.