My husband and I bought a gps for dogs. It is a small, black box that our dog wears around it’s neck on a collar. It is light weight and fitted on a durable collar that is sturdy enough to stay on the most active dogs. If our dog ever were to get out of our yard, we would be able to track it on either our computer or our phone. Because we have control of the gps, we are able to start tracking our dog as soon as we find out it is missing. It gives us peace of mind to know that our dog will never be gone for long.