What would you do if your beloved dog or cat escaped? If you hadn’t taken preventative measures beforehand, they could be gone for good. Fortunately, the current trend of wearable devices extends to pets too. We have smartwatches and fitness trackers for ourselves, but did you know that you can buy a GPS tracker for dogs or cats? We’ve rounded up some of the best pet trackers and activity monitors (plus other smart pet gadgets) that you can benefit from, so let’s take a look. The Best GPS Tracker for Dogs Whistle 3 Whistle 3 GPS Pet Tracker & Activity Monitor Whistle 3 GPS Pet Tracker & Activity Monitor Buy Now At Amazon $79.95 If you’re looking for an all-in-one dog GPS and activity monitor (think Fitbit for dogs and cats), then it’s hard to top the Whistle 3. The Whistle 3 simply attaches to your pet’s existing collar, meaning you don’t need a dedicated dog tracking collar.