Dog history/What was the first dog on earth/Answer!

                          Dog history

By around 30 to a long time back Miacis had developed into the first true dog — to be specific, Cynodictis. This was a medium-size creature, longer than it was tall, with a long tail and a genuinely brushy coat. Throughout the long term Cynodictis brought about two branches, one in Africa and the other in Eurasia.  

Dog history