A user is seeking a small tracking device for dogs that can operate over a range of 0.5 miles or more, ideally the size of a watch battery or smaller. Concerns are raised about the limited signal range in hilly or wooded terrains, suggesting that existing wildlife tracking devices may be a viable option. GPS recording trackers are mentioned for post-retrieval mapping, but they do not assist in real-time tracking. Various links to wildlife tracking systems are shared, highlighting the importance of line-of-sight for effective signal transmission. The discussion concludes with a desire for a real-time tracking solution that fits within a compact size, similar to that of a pencil.