A predator of the tundra, has thick fur, its legs are short and wide, does it feed on lemmings and partridges?

This predator is called arctic fox and has thick white fur in winter and dirty brown in summer. Arctic fox is a small, even small mammal predator living in the tundra zone beyond the Arctic Circle. Belongs to the canine family of foxes. The arctic fox is also called the polar fox because of its similar size and appearance. Arctic fox mainly preys on rodents, especially lemmings and birds.