He responds to your voice
Sure, your dog runs over when you tell him that dinner is served or it’s time for a walk. But according to NPR, researchers have determined the reward pathways in a dog’s brain light up when they hear praising words and approving intonations. Your dog is listening to what you’re saying and how you’re saying it. Dogs process speech by separating the meaning of the words from the intonation. And they analyze each aspect of speech independently. If your dog runs over to you when you call him or responds positively to the sound of your voice, that’s a pretty good sign that he loves you.