6. Ate Something He Shouldn’t Have
Photo Credit: Dan65
I’m sure everyone has had at least one dog who was always finding something to eat that wasn’t necessarily edible. This can definitely cause an upset stomach to occur. The only thing you can really do is wait, unless it seems like your dog is utterly miserable. There was one time when my dog ate a tennis ball. It was chewed up into small pieces, but it was still extremely hard on his innards. I had to take him to the vet and get the contents removed.