White wolves, also called arctic wolves, inhabit the northernmost regions of North America and Greenland, called the High Arctic (between roughly 70 degrees north latitude and 90 degrees north latitude). Above 70 degrees north, there are no gray wolves, only white wolves.
Arctic wolves are widely distributed throughout the High Arctic due to their ability to cope with the cold climate and vast stretches of time without sunlight. White wolves have smaller bodies and snouts than gray wolves, and these adaptations allow arctic wolves to retain more body heat. They also grow a thick second coat in winter to insulate themselves from the harsh temperatures and wind. As of 2014, the white wolf's habitat is declining as a result of climate change.