It is about the size of the extinct fox and very different from its temperate woodland cousin, the temperate ravene. It has a small head with tiny eyes and ears (an adaptation that prevents frostbite) and long, dull brown fur that turns white in the winter to camouflage it against the snow. It attacks the meachings by digging into the fortress with its front paws. In early autumn the polar ravene molts its dull summer coat and grows a thicker creamy brown covering of fur. Although the polar ravene is larger than the ravene of the temperate woodlands, it has smaller facial features.
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