There's a device that can track your dog's movements to see if they get enough exercise, and how often they take naps. Tagg is, as it sounds, a small device that is clipped onto any collar and is water resistant for the most adventurous canines. Sold as part of a Pet Tracker kit, it can also tell you where your dog is in real time and alert you if your dog gets lost. While a docking station is positioned in the home, the Tagg device works with wireless GPS technology to keep on top of the dog's location around the clock.