At least the frogs can be shot and then vendors can start offering tasty frog leg appetizers. Unlike the *bleeping* invasion of Japanese beetles (the yellow 'ladybugs') here in the US. Bloody things can't be shot, they stink when squished, pesticides don't work, and they get into everything. All courtesy of enviro-weenies looking for an eco-friendly way to eliminate pesticides for soybean crops...
Then there is kudzu - the Asian vine that is deforesting and destroying crops in the South. A plant someone thousght was "cute" at an Expo.
You'd think people would learn - leave the critters and plants where they grow naturally....unless they're dead and tasty*. :-)
*Commentary from PETA (People for Eating Tasty Animals)