All the domestic breeds of dogs that we are familiar with, from chihuahuas to pit bulls, are the same species: Canis lupus familiaris. In fact, our dogs are a subspecies of Canis lupus, or wolf. Your dog could interbreed with most wolves -if you weren’t a responsible pet owner who spayed or neutered your dog.
Dogs belong to the taxonomic family Canidae (canines) which is divided into two tribes: those related to wolves (Canini) and those related to foxes (Vulpini). Let’s look at some wild dogs that are related to your pet, in this article I posted at mental_floss.