Tagg Pet Tracker - GPS Pet Tracker and GPS Dog Tracker System Runaway pets won't stay lost for long when they are wearing the Tagg Pet Tracker. This purpose-built pet tracking device uses GPS and wireless technology to help you track your pet's location as well as activity level. With the Tagg GPS dog tracker, you can monitor your pet's location, receive notification if there is an escape and easily track where your pet has gone. The Tagg GPS Pet Tracker App for iPhone and Android smartphones is a convenient way to stay in touch with your pet. Receive alerts, find your pet on a map, and get driving directions to their current location. The free Tagg App also allows you to monitor your pet’s health by tracking their daily activity levels.