Editor's note: Although they get a bad rap in the phrase “crocodile tears,” this fearsome night hunter is actually making the world a better place by cleaning up its environment and keeping its ecosystem in balance. In the Nile, for example, crocodiles keep the barbel catfish population from obliterating other types of fish, those fish being essential food for around 40 species of birds. So bring on those false tears and let’s light up your screens with some stunning Crocodile wallpapers!