Giraffe (IMAGE) Brown University Caption A reticulated giraffe selects a mouthful of a Hibiscus plant at the Mpala Research Centre. The researchers analyzed plant DNA in animal fecal samples to quantify the diet composition for 33 herbivore species. Credit Robert Pringle, associate professor of ecology and evolutionary biology at Princeton University and senior author on the study. Usage Restrictions None License Licensed content 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.