After working in the environmental education field for two decades (and being a bit of a word nerd), signs like this really make my skin crawl.
I’m not alone in my reaction. I recently had a chance to visit with two of my former colleagues and we ended up swapping work-related stories: In answer to a question about a mushroom on a nature hike, Jeff replied, “Well, technically, everything is edible. Once.” Which is in a similar vein as one of Julie’s favorite sayings, “The poison is in the dose.” Because even water can kill you, if you drink too much of it.
There is a huge difference between poisonous and venomous: if you bite it and it kills you, that’s poison; if it bites you* and kills you, that’s venom (so yes, you could eat a venomous animal, if you were exceptionally careful, but I don’t recommend it). Then again, you’re dead, what do you care?!
*Or breaks your skin in some other manner.