Pointing Behavior by Great Ape Trust Bonobos (image) Great Ape Trust of Iowa Share Print E-Mail Caption Kanzi, shown with Great Ape Trust researcher Liz Rubert-Pugh, routinely points to lexigram symbols to express his thoughts. He also points in response to conversation, as a human would, a topic addressed in a paper on pointing behavior by Great Ape Trust scientists. Credit Great Ape Trust Usage Restrictions Usage limited to this news release. 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.