Yawn when you yawn.
Yawning is contagious. But did you know that this impulse is not limited to humans? Dogs, because they were bred to read humans, also yawn when someone they love yawns.
It is impossible to measure whether dogs are empathetic, but it is possible for a dog to yawn at the same time as a human to occur because the dog has bonded with that person.
The study also found that the dogs were more likely to yawn when their owners were yawning, as opposed to a stranger.