Opcn
Big fish
Just about every plant evolved some biological compounds to kill herbavores, most have roughtly ten compounds in them to kill things, some have as many as 60 (cannabis sativa has a huge number 421 canabanols plus nicoteen (sp?) plus a few more) theres only one plant that I've ever heard of having less than 5 noxious compounds, thats the seaweed thats infesting the mediteranian, it just has loads and loads of one bad tasteing compound and nothing touches it.