The gray wolf is at least four different sub-species.
The gray wolf or grey wolf ( Canis lupus ) , also known as the timber wolf or western wolf , is a canine native to the wilderness and remote areas of Eurasia and North America . , 37 subspecies of C. lupus are recognised by MSW3 . It is nonetheless closely related enough to smaller Canis species , such as the eastern wolf , coyote , and golden jackal to produce fertile hybrids .