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Arctic animals are well-adapted to the brutal conditions of the arctic. They must be adapted to breed and grow successfully during the brief period of warming. During the winter, whitening fur and feathers make the animals less visible against the snow and ice. Relatively short appendages help the animals retain heat. The Polar Bear is shown here. hide information

Arctic animals are well-adapted to the brutal conditions of the arctic. They must be adapted to breed and grow successfully during the brief period of warming. During the winter, whitening fur and feathers make the animals less visible against the snow and ice. Relatively short appendages help the animals retain heat. The Polar Bear is shown here. This stamp was issued by the United States Postal Service on March 12, 1999 as part of the Arctic Animals series .