A thrilling story of a dog who found the perfect job and a loving home, based on the real heroes of Working Dogs for Conservation.

Tucker the dog never means to be trouble: he just loves to play. But at the animal shelter, every visitor says he's too much trouble--until Laura. Laura thinks Tucker might be just right for a very special job. Could all his energy make him an amazing conservation dog? Laura trains Tucker to track down Gila monsters, endangered flowers, even grizzly bear poop. His first assignment is in Hawaii, searching for invasive rosy wolf snails hidden under leaves. Where will his nose lead him next?

With colorful, endearing art and dashes of humor, Trouble Dog invites children to join scientists--and their canine colleagues--in their work to save wildlife around the world. Readers will cheer for Tucker's inspiring journey from shelter dog to eager trainee to confident globetrotter. The story concludes with photos and further information about the real dogs and trainers of Working Dogs for Conservation, the world's largest and oldest conservation dog organization.