\" \" Recently discovered rock carvings in Saudi Arabia depict prehistoric dogs on leashes. If your dog lays that one on you, your best recourse is to show him the world's oldest known dog art. AdvertisementAdvertisementA recent study published in the Journal of Anthropological Archaeology in November 2017 describes recently discovered rock carvings in the Shuwaymis region of the northwestern Saudi Arabian desert, illustrating prehistoric hunting practices, using dogs as assistants. Even if they're overshooting their estimate, the next oldest dog art would be on some Iranian pottery that's 8,000 years old at most. These newly found drawings certainly are the oldest depiction of leashes — before this find, the oldest art showing restrained dogs was from a 5,500-year-old Egyptian wall painting.