Pet trackers are small devices that help pet owners keep track of their animals' locations. These devices often use GPS technology to provide real-time tracking, allowing owners to see where their pets are at any given moment. Many pet trackers can be attached to collars and are designed to be lightweight and durable. In addition to location tracking, some pet trackers offer features like activity monitoring, which helps owners understand their pets' exercise habits. This information can be useful for ensuring pets stay healthy and active. Popular brands of pet trackers include Whistle, FitBark, and Tractive.