In her youth, Shola, an English Shepherd Dog, was a member of the Edale Mountain Rescue Team, a corps of U.K. pooches charged with helping hurt and stranded hikers. But Shola was retired as part of ...

Progressive retinal atrophy (PRA) is a group of inherited diseases that causes progressive degeneration of the light sensitive cells at the back of the eye. Dogs with PRA have normal sight at birth, ...