It’s obvious that people can communicate with dogs. Throw a ball and tell a dog “fetch,” and the dog retrieves the ball. But do dogs understand the word “fetch,” or do they just understand that you threw a ball and made a sound? They could also be focused on some other cue entirely — the tone of your voice, or the direction of your gaze. Luckily, scientists have looked into this.
Interesting study about something I have often pondered.