If you’ve ever noticed your friend’s tiny Chihuahua still bouncing around well into its teens while your neighbor’s Great Dane started slowing down after just a few years, you’re not imagining things.

Dr. Nita Vasudevan and Dr. Liza Cahn reveal which tiny dogs will steal you heart.

"My big dog often behaves as if he's dumb as a post, but my small dog is an Einstein." "Size doesn't matter. My big and small dogs are smart on some tasks and not so smart on others." "Molly, my tiny ...

Add Yahoo as a preferred source to see more of our stories on Google. When most of us think about puppies, we're probably thinking about very small dogs — after all, they are babies, aren't they? But ...