That reminds me, have you ever seen the Cane Toad documentary? Australians are funny people. Once goober made a sport of running over as many as possible and he was talking about the "pop" they make if you hit them just right.
idk if it's illegal, I know that there's polarization about the cane toad issue - some people love them because they're safe for children to play with and they tend to eat vermin (and everything else) but some people hate them because they are toxic and end up killing many cats and dogs each year.