Geography of Canada Canada's territory as sparsely populated wilderness; Canada's population density is 3.5 people/km (9.1/mi), among the lowest in the world. Despite this, 79.7 percent of Canada's population resides in urban areas, where population densities are increasing. Canada shares with the U.S. the world's longest undefended border at ; are with Alaska. The Danish island dependency of Greenland lies to Canada's northeast, separated from the Canadian Arctic islands by Baffin Bay and Davis Strait. The French islands of Saint-Pierre and Miquelon lie off the southern coast of Newfoundland in the Gulf of St. Lawrence and have a maritime territorial enclave within Canada's
Baffin Island robust fur industry. Arctic hares are found throughout Baffin island. Their fur is pure white in winter and molts to a scruffy dark grey in summer. Arctic hares and lemmings are a primary food source for Arctic foxes and Arctic wolves. Lemmings are also found throughout the island, and are a major food source for Arctic foxes, Arctic wolves and the snowy owl. In the winter, lemmings dig complicated tunnel systems through the snow drifts in order to get to their food supply of dry grasses and lichens. The Arctic wolf, and the Baffin Island wolf, a gray wolf subspecies,