To hear Bill Mason tell about the making of this feature film (he is also the narrator) is to share with him his affection for his camera-quarry: the big northern timber wolves and pure-white Arctic wolves. What he brings to the screen is some unexcelled film footage and a great depth of lore about these wary, intelligent creatures of the Canadian wilds. Filming was done over three years in the Northwest Territories, British Columbia, the high Arctic, and near his Gatineau Hills, Québec home where he kept and observed three grown wolves and, eventually, the litter of cubs that provides some of the film's most engaging sequences. Bill Mason was an award-winning naturalist, author, artist, filmmaker, and conservationist, noted primarily for his popular canoeing books, films, and art. He was born in 1929 in Winnipeg, Manitoba, Canada, and graduated from the University of Manitoba School of Art in 1951. He developed and refined canoeing strokes and river-running techniques, especially for complex Whitewater situations. He canoed all of his adult life, ranging widely over the wilderness areas of Canada and the United States. Called "wilderness artist", in one book about him, Mason left a legacy that includes books, films and artwork on canoeing and wild nature. He died of cancer in 1988.