Maybe not. Although all domestic dogs are conveniently classified taxonomically as the same species, e.g., Canis familiaris, there was a theory that some modern dogs came from wolves and some were bred from foxes. Remembering my taxonomy, this would place dogs from wolves and dogs from foxes into the same family classification (Canidae) but not the same genera and certainly not the same species. Just a bit of trivia from an old biologist.
Muleteam1
Interesting. Thanks for the help on that one.