Jaymi Heimbuch is a writer and photographer specializing in wildlife conservation, technology, and food. She is the author of "The Ethiopian Wolf: Hope at the Edge of Extinction." Agility training is ...

Dogs of all ages and sizes need exercise. Without this physical stimulation, they will not live a happy life. However, finding the time to walk or run your dog as much as you would like can be tricky.

Eyes ablaze with focus, the black-and-white dog heeds the start cue from her handler. She makes a jump, sprints up an A-frame, darts into a tunnel, shimmies through the weaves like a slalom skier, ...