My dog Dozer slowly slumped to the floor today and wouldn't move. He started falling asleep. I thought he was dying. My husband took him to the emergency vet and he vomited on the way, but he got into the car on his own. They said he had blood in the sac around the lung and around his stomach and he had a small growth in his heart too. We have no idea what that means or what caused it. He has never been injured. About 6 years ago he had a mysterious illness that was thought to be pancreatitis, though they never really knew.
Other than that he was a 9 year old puppy. Does anyone know what caused this? I found information on the heart problem, but not the stomach.
My husband is hysterical and he said the vet was balling as he put him down. I can't stop crying either.

My heart aches for you and your boyfriend. I'm so very sorry for your loss. Sending comforting prayers 
