My fiance and I went out of town last Thursday morning. We had taken our k-9 baby to my mom's and had arranged for our dog sitter to come by and check on the our other 2 k-9 kids. Everything was fine Thursday morning when we left. We had the dog sitter coming 3 times a day for the entire time that we were gone. Early Friday morning we received a phone call from my mom. Our dog sitter had called her in hesterics. When she got to our house she found our indoor k-9 kid had been throwing up blood and blood was also coming out the other end. She went ahead and took him to our vet. We kept calling trying to find out what had happened. We were in Florida and we live in North Carolina. Finally we talked to the vet and he said that this happens a lot of times to "older" dogs (he is 9 yrs. old). He said it was some kind of gastric thing. Can anyone shed a little light on this? Our dog lost alot of blood and he was dehydrated. He had to stay in the hospital for the weekend and we were able to pick him up Monday. He seems fine but he is still on medication. I just don't understand what actually caused it. Any info will be appreciated.