None of the wild cats are believed to share the catus species unless they are re-feralized house cats. Many other species are close and can successfully breed with the house cat. Even some of different genera. But none stand as identical species to the domestic cat as the wolf does to the domestic dog.
The african wildcat subspecies *IS* the domesticated cat. The tibetan wolf subspecies *IS* the domesticated dog.
The north american wolf is as different from a dog as the european wildcat is from a house cat.