Humans have a tighter bond with dogs than perhaps any other animal. But figuring out exactly how that bond developed has been a huge, tantalizing challenge for researchers. Now, an ambitious study of canine genetics suggests that dogs’ history is even more complex than we thought — and that the animals we know now actually come from two separate groups of ancient domesticated wolves in Europe and Asia.

Source: Dogs Were a Species So Nice, We Domesticated Them Twice | The Verge