This caiman’s colorful crown of butterflies looks magical, but it’s actually the result of a very normal craving: salt. Butterflies, moths, and other insects need salt to survive, but their plant-based diets don’t always provide enough. Human sweat and reptilian tears—such as the caiman’s—can be a source of scarce minerals and protein. While drinking, the butterflies don’t hurt the caiman. But it sure looks like it tickles!