bellissima Asked: My English bulldogs are dead?

Poison or overheating?
5 bulldogs died at once. Autopsy showed – internal bleeding among organs. The organ`s inside tissue was ok – no damaged – outside lot of blood spilled into abdomen. Bran – flow and with liquid.
I found the dogs dead with sings of vomiting large quantity of water /at once/ . And they were died on place where is no shadow. Usually,they have shadow and stay under it.
What I am concerned is about post Mortenmassive liquid blood found between abdomen organs
All the dogs died in one time
They were healthy, good trained, young, no difficulty in breathing
Does anyone know post Morten signs of overheating in comparison with poisoning ?
Thanks