Dogs come in all shapes and sizes, but some breeds tower above the rest, in both height and heart. These gentle giants have been companions, protectors and working partners to humans for centuries.

A wagging tail is the universal sign of a happy dog, especially for a rusty golden retriever named Rye. It's his "tell-tail" ...

Labrador mix alerts his owner, a fisheries technician, to the presence of brown bears while he works salmon streams.

With the aid of a GPS collar, my hunting pal Jim Wood tracked the miles his dog had logged throughout the pheasant hunting ...