Sleeping Black Dog

Riddle: A black dog is sleeping in the middle of a black road that has no streetlights and there is no moon. A car coming down the road with its lights off steers around the dog. How did the driver know the dog was there?

Answer: It was daytime

Source: https://www.riddles.com/1322

A black dog is sleeping in the middle of a black road that has no streetlights and there is no moon. A car coming down the road with its lights off steers around the dog.
How did the driver know the dog was there? — Sleeping Black Dog by Anonymous v1.

Riddle: A black dog is sleeping in the middle of a black road that has no streetlights and there is no moon. A car coming down the road with its lights off steers around the dog.
How did the driver know the dog was there? Answer: It was daytime — by Anonymous v2.