How did farlap die?

On the morning of the day he died, Phar lap's trainer found him in severe pain and with a high temperature. Within a few hours, Phar Lap hemorrhaged to death. When an autopsy was done on the horse, the stomach and intestines were inflamed, which lead many believed the horse had been deliberately poisoned.

Though it was never known for sure. Some people speculated that he was accidentally poisoned from lead insecticide, and had a stomach condition.