And finally tonight, for all of the pet lovers who have insisted their dogs somehow understand emotionally what they're saying and feeling. A new study shows you may be right. ABC's Linzie Janice with proof of connection with your best friend. And they'll tell you -- their companions seem to their best friend seems to understand them in a way no other pet can. On youtube, thousands of dogs --entertaining and comforting us. Check out these dog owners pro tending to cry. Now, watch as their four-legged friends run over and try to cheer them up. Tonight, scientists say there's a reason humans and dogs get along so beautifully. Dogs might understand when we're happy and sad. Because they hear emotions in our voices the same humans do. So when I'm happy, ace here knows it. Same goes for when I'm sad. Here's how researchers in Hu Hungary figured it out. First, they trained these dogs to lie completely still in an mri machine for up to eight minutes. Then, they conducted the first-ever comparison between the brains of humans and dogs. Putting head phones on both while exposing them to the same sounds -- crying, whining, laughter. Look at our brains side by side --the same areas active in humans also active in dogs. They have a sensitivity to some of the same things we do. Including someone who's experiencing strong emotions and that does mark them quite different from other animals. Reporter: Scientists think it might be because we've grown up together, they say dogs and humans have been buddies for over 30,000 years. Why we just get each other. Thank you for watching. We're always here at