Wolves are an extremely social animal. They exist as a social unit called a pack. Within each pack is an elaborate hierarchy. It may consist of a single breeding pair, the Alpha Wolf must be male and female, a lower group consisting of non-breeding.
A strain of wolves in Canada was able to mate successfully with both coyotes and other strains of wolf, and a hybrid was created that now ranges over the east coast of Canada and the US. It is a highly adaptable, freakishly intelligent canid.