Aliquippa police say the man had a bite mark on the inside of his wrist, but the toxicologist said the mark was not recent.
The man's cause of death is still under review by a coroner.
Police say hundreds of reptiles were inside the home, and while they took most of them, nonvenomous snakes were allowed to stay.
Four adults lived in the home as well as a 3-year-old girl.
"It's sad that they lost someone, I feel bad for that part. But at the same time, why are ya'll living with all them snakes in an itty-bitty house in a residential neighborhood?" questioned one woman.
Officials say two men who lived in the home ran a reptile business together.