Threatening Gesture (image) Society for Neuroscience Share Print E-Mail Caption American alligator (A. mississippiensis), threatening gesture. At Rockefeller Wildlife Refuge. The ears of Alligators are hidden under skin flaps right behind the eyes. Alligators use sounds for communication and to locate prey. The neural mechanisms underlying sound localization are an evolutionary stable feature across archosaurs, which include birds, the closest living relatives to crocodilians. Credit Ruth Elsey, Louisiana Department of Wildlife and Fisheries Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.