A lady at the dog park looked at the one on Mary's side (the one my mother tells Mary that a puppy is in it) and told me about her dog's tumour and how it ruptured. SHe said it was awful and messy but the vet said it was not serious. I look at the one on Mary's side and pray that it doesn't. I cant begin to imagine. Has that happened to anyone here? Mary is more lumps and bumps then not on her stomach and the one on her side is huge.