Re: Just to be pedantic
"Poisonous means it's bad for your health if ingested, venomous means its bad for you if introduced to the bloodstream."
Since we're in hair-splitting mode, allow me to disagree.
"Poisonous" is what a substance is. The stuff on the tip of a blowpipe dart is poisonous, but possibly harmless if ingested.
"Venomous" is the characteristic of a creature that can deliver a poisonous substance by stinging, biting or other active means.
Plants, for example, may be poisonous but not venomous. There are, I believe, frogs that have a poisonous coating all over their skin. Whether these count as venomous, I'm not sure.