They are all still dogs, Amos. They are all still dogs.
The slippery slope on which you are treading (I can't believe that you haven't thought of this -- you're too smart not to) is that you are usinig the very same thinking that racists have used to justify their sickness for a very long time -- that somehow the physical differences (that can be extreme), signify a meaningful difference in the species. They don't. The Caucasian and the Black and the Oriental, etc., are all the same thing. Exactly. there is no evidence that one of us is evolving away from the other...