Sorry about Rocco. I am not a new chin owner, but I did learn something from you sharing this experience. You mentioned the vet saying the back injury may not have happened if he were held better. I know from experience with Trixie, that when she starts struggling because she is anxious to get back into her cage from playtime, it is hard to keep a good grip..and a couple of times I almost lost her. But I am learning to hang onto her better when I do carry her back to her cage.