National Geographic : 2004 Oct
HO M E EN T ERTA INM EN T at the den features endless playby arctic fox pups on Victoria Island (below and opposite center). Farther south, near Churchill, the father of the 13 pups leaps to join the fun (opposite bottom). When the pups were about two weeks old, their mother moved them one by one (opposite top) to a new den. Heavy rain may have prompted her decision, or she may have sought a cleaner site. Dens are often used by many generations for as long as 300 years. The burrow complex may spread over 500 square feet and have a hundred entrances, offering the pups quick escape from predators. Owls and eagles prey on young and adults, as do red foxes, a species from the south that overlaps the arctic foxes' range. Red foxes, which are considerably larger, also compete with arctic foxes for denning sites. SPY THE FOX Experience the sights and sounds of arctic foxes, view more fox images, find foxy web links, and download fox wallpaper at nationalgeographic.com/magazine/0410.