Finding the best pet GPS tracker that’s best for your pet is not an easy task. Find in depth reviews on pet trackers for both dogs and cats..SportDOG TEK Series e collars and GPS locators are the ultimate in tracking and training hunting dogs. TEK e collars let you track and train up to dogs from up to . GPS Trackers for Your Pets, Attach to your dog or cats collar and track them in Real Time from you iOS or Android app, GPS Tracking Devices.Garmin ASTRO T Add On Collar. Add another dog to your Garmin Astro GPS Tracking system Please note that Astro handheld users will require a software update to .