AdvertisementExtreme Animal Portraits: Wildlife Photographer Of The Year WinnersOctober 19, 2012Coburn DukehartfacebookEmailWinner - Behavior: Cold-blooded Animals - A yacare caiman waits for fish to come within snapping reach in the shallow, murky waters of Brazil's Pantanal - the biggest wetland in the world. Caimans can grow to be three meters in length. (Veolia Environnement Wildlife Photographer of the Year 2012)