A fox with rare black fur made a brief roadside appearance in Yellowstone National Park last week. The fox’s coloring is ...

while “blue” Arctic foxes are a slate gray or black color year round. The Arctic fox pelt is thought to be the warmest fur of any arctic animal, and they are hunted and farmed for this fur.

THREATS: Arctic foxes are threatened by global warming, competition from the larger, northward-spreading red fox, and hunting and trapping for the fur trade. POPULATION TREND: The worldwide population ...