It looks like dogs really do understand what we are trying to tell them, they are thinking about what we want, and they understand that we are trying to communicate.
Wolves have bigger brains than dogs, so it was thought the wolves would do better. And chimpanzees are primates, closer to humans, so it was thought they would do better.
Dogs have a talent for reading social cues in a very sophisticated way.
What is really special about dogs is they're really similar to even human toddlers.
When dogs and humans make eye contact, that actually releases what's known as the love hormone, oxytocin, in both the dog and the human.
When dogs are actually looking at you, they're essentially hugging you with their eyes.