Call E.P.A., get some federal agents involved, have animal indicted and charged, and see if the prosecutor goes for the death penalty. Then PETA gets involved. It'll take 20 years before the Supreme Court could rule, and by then the animal would be dead of natural causes, but he would be locked up, so he couldn't eat any more of those plants. Also, we could keep him locked up at Guantanomo, which would be a better use for the place.
I'd laugh. Then cry. But I'd laugh first.
Laugh? Yes, Laugh!
Get him another edible plant!