If you're concerned about your pet getting lost, Whistle is a good option to look at. Its GPS pet trackers and activity monitors offer location updates every 15 seconds and features like Escape Alerts and Health Monitoring. The devices also track daily activity and generate wellness scores so you can monitor your pet's health and safety. The subscription-based service costs $5/month for GPS tracking, and the devices cost $69 to $149.
Another good option is Petcube. The system combines interactive pet cameras with GPS tracking so you can keep tabs on your pet's whereabouts and activity. Features include real-time location updates, virtual fences and 24/7 vet access. The system integrates with Amazon Alexa and comes with a 45-day money-back guarantee. The GPS tracking subscription starts at $5/month, so it's relatively affordable and easy to manage through the Petcube app.