The Arctic fox is a canídeo animal that lives in the extremity North, in the localities where the temperature is well below-freezing. The acizentada in summer and total white brown pelugem in the winter is one of the hottest of all mammals, still more that of the polar bear, what guarantees its well-being, however it attracts many hunters with commercial interests. Its legs equally are covered of by the ones guaranteeing greater tack to the slippery surfaces of frozen environments. Bichinho of about 30 cm lives in group in burrows that he himself digging. These hiding places have about four the eight linked exits for tunnels that cover an area of up to 30 m ². Some of these tunnels are used have hundreds of years and already they had sheltered some generations of foxes.