These may be the first images of dogs, and they’re wearing leashes (2017)

Carved into a sandstone cliff on the edge of a bygone river in the Arabian Desert, a hunter draws his bow for the kill. But she cautions that more work will be needed to confirm both the age and meaning of the depictions. Then about 7000 to 8000 years ago, people here became herders, based on livestock bones found at Jubbah; that’s likely when pictures of cattle, sheep, and goats began to dominate the images.

Source: www.sciencemag.org