The irony of this is that acetaminophen is a poison to most mammals, reptiles, birds and fish. Humans are unusual in that they can take some of it for therapeutic reasons.
In Guam, there are invasive snakes that the government wants to eradicate. To do this, dead mice have an acetaminophen pills inserted into them, a small parachute tied to them, and they are dropped by aircraft into the jungle.
"I smell a rat," said the snake. No self-respecting snake would eat a dead mouse, much less one that parachuted into the jungle.