A GPS collar is a device worn around the neck of an animal, typically pets like dogs or cats, that uses Global Positioning System technology to track their location. This collar allows pet owners to monitor their animals' movements in real-time, ensuring their safety and helping to locate them if they wander off. These collars often come with additional features, such as activity tracking and geofencing, which alerts owners if their pet leaves a designated area. GPS collars are especially useful for outdoor pets or those prone to escaping, providing peace of mind for their owners.