Dovahzul, literally meaning "Dragon Language", is the ancient and universal language that is spoken by the dragon race. Nearly all dragons, no matter the species or genus, are capable of speaking dovahzul as well as able to understand it should one dragon from a different species speak to a separate one as well.
While the exact origins of the language remains unknown to this day, it is widely believed to have dated all the way back to Sumeria. And the earliest known finding of the language was in one of the ancient Sumer, a historical region in southern Mesopotamia, modern-day southern Iraq, during the Chalcolithic and the Early Bronze ages. More specifically it was located during the fourth millennium BCE.