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Any animal or plant that thrives in winter conditions, especially one that thrives in snow.

Japanese macaques can survive in cold temperatures of below −15°C (5°F), and are among very few primates that can do so.

Any animal or plant that thrives in winter conditions, especially one that thrives in snow.

The musk ox thrived during the ice age 10,000 years ago, but after the earth had warmed up and the ice had receded it was forced either to migrate northward to cold environments for it to live in, or go extinct as the woolly mammoth did.

Any animal or plant that thrives in winter conditions, especially one that thrives in snow.

The snowshoe hare in its winter coat is well camouflaged among the snow.