Plant with Hollow Thorns for Ants to Live In (image) Field Museum Share Print E-Mail Caption A plant that evolved hollow thorns for ants to shelter in. In exchange, the ants defend the plant from attacks from other insects and mammals. Credit (c) Field Museum, Corrie Moreau Usage Restrictions Please include credit to (c) Field Museum, Corrie Moreau 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.