My dad found a number on the inside of the Collar when he took it off. He called the Guy. He was running deer a week and a half ago. He lost 3. Went home, Came back the next morning to retrieve them and he couldn't find this one. My Dad said well he's at my house if you can come get him. He then asked if we wanted him. My dad said yes, we will keep him if you don't want your dog back. He said well, you got yourrself a dog! So I guess were in the clear