Dr. Bradley Smith from Central Queensland University has conducted a study that proves that the Dingo is not a variety of domestic dog, feral dog, or other wild canids such as wolves, but is its own species.

image from free google stock
Dr. Smith also says that “Further evidence in support of dingoes being considered a ‘wild type’ capable of surviving in the absence of human intervention and under natural selection is demonstrated by the consistent return of dog-dingo hybrids to a dingo-like canid throughout the Australian mainland and on several islands.”
He goes on to say that there is scant evidence that any canid species are interchangeable with Dingoes even though most canids can successfully interbreed with them.
This is an interesting statement to consider. How does it apply to other hybrids such as dog/wolf mixes and donkey/horse mixes? It also brings into question the theory that dogs are descended from wolves. Is it possible that the ancestor of the dog was a canid sub-species and not a wolf just as the dingo is its own species?