Then a photo on Flickr caught Prötzel’s attention. The picture showed a chameleon called Calumma gastroaenia. The photographer, Paul Bertner, had put a UV light over the lizard, and three tiny tubercles on the chameleon’s head were. Get Paid To Take Photos! Make an extra or full-time living from your Photography! Work at home, make money no matter where you are in the world! AP Photo/Julio Cortez "The spike is…