A friend of mine came over yesterday , he is not a dog person , but likes animals . His wife works at the Dollar store and gave him a bag of rubber or plastic balls to give my dogs . I let him throw a ball in each kennel . Tank was playing with his and Jack didn’t touch his . I was going to let them play with them and take it away when they started chewing on them . Well he got a call from another one of our former coworkers and we went inside to talk to him . When I came back outside Tank had ate one side of his ball and Jack ate the whole ball . Now I am worried that they are not going to be able to pass it . There was no sign of it in their stools this morning . Tank threw up a small piece this morning after eating some hay .