Keller is a happy dog. In photos taken by the woman who loves her, her startling blue eyes twinkle with merriment. But she sees very little through those eyes. She was born partially blind. Because ...

At first glance, Brody looks like the happiest, silliest dog in the entire world. He's an all-white Australian Shepherd with pale blue eyes, a pink-and-black nose, and the kind of sweet, goofy smile ...