Which dog cannot bark?

The dingo is one of the very few dogs in the world that is unable to bark. It is not a silent dog, however, as it makes up for not barking by howling and whining very loudly indeed. Dingoes are a very ancient breed of wild dog from Australia. They are probably quite closely related to the primitive dogs from which our domestic dogs of today evolved. Dingoes must have arrived in Australia with the first Aborigines to settle there from Asia. They soon went wild although the Aborigines of today still rear pups and train them for hunting. Dingoes are considered a pest in Australia because of the large number of sheep and cattle they kill every year.