Lucky was an 8 year old docile and kind lab/pitbull mix I rescued from a shelter for my parents in 2004. She was a happy dog,her health was good though she was a bit overweight. She had been acting very "clingy" to my father the last few days. Early this morning around 5am my parents called me, they were awakened by a deep, weak crying from the kitchen. and told me Lucky was on the kitchen floor and not responding, bleeding from her anus and fluid coming from her mouth. Within minutes, she was gone. She was due for her yearly vet appt. soon and was good at her last one other than being a bit heavy. Ive been reading on what could have caused this and think it might be gastric bloat, although nowhere do I see symptoms of anal bleeding associated with it. If anyone has any clue or knows an online source for information, it would be appreciated.