I think canine species evolve/adapt quicker than anthropoids, that is all. I recently saw on tv about a russian program of domesticating foxes. Within 20 years of selecting for breeding the better temperament animals they created fully domesticated foxes, but the interesting is other characteristics that occured. New colors and color patterns similar to dogs, tail wigling while they are happy etc, completely new for foxes never seen before habits. The only thing they still seem to retain is their urge to hide food all over the places.
Makes you wonder about animal adaptation, doesn't it?