Know and adventure more with Whistle go explore. Always know where they are-and how they are. Whistle go explore monitors your pet’s location and health for total peace of mind. Just attach it to your pet’s collar, and customize the Whistle app to send alerts and insights to key people in your pack. Pinpoint your pet’s location with live tracking. Monitor behaviors that may point to potential health issues. Plus, know where your pet went and with whom. You can even set fitness goals based on age, weight, and breed, and review weekly reports that break down your pet’s latest stats. With a built-in light for visibility and a battery that lasts up to 20 days, Whistle go explore is the ultimate pet tracker. For dogs 25 lbs and up.