Say Aahh! (video) Brown University Share Print E-Mail Loading video... Caption Trioceros hoehnelii was one of the 20 chameleon species in the study. Here tongue extension is shown in very slow motion. Credit Christopher Anderson Usage Restrictions with credit 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.