I was at a festival sat next to a couple with a youngish German Shepherd cross looking dog. It was very busy with people walking past and the dog was clearly anxious. Then a guy carrying a kid on his shoulders came walking up and the dog freaked out, barking it’s head off at them. Until it saw them side on and realised it was a kid and a guy rather than a two headed giant then immediately stopped barking and sat back down, looking extremely embarrased.