The dog's was brand new, purchased two days earlier. The dog, a pit bull, was tied to a tree with a cable which was attached to the D-ring on the collar. The collar was made in China according to the label. Collars made in the USA have the D-ring welded shut. When the coach arrived to pick up one of his players the dog pulled against the tree. The collar's D-ring was not welded shut. As a result, the when the dog pulled the D-ring straighten out which released the dog. The coach was viciously attacked from behind but escaped into his car.