Mongooses & Warthog (IMAGE) Wildlife Conservation Society Caption The warthog-mongoose encounter is a rare example of mammals exhibiting a symbiotic relationship called mutualism, where two animal species form a partnership with benefits for both groups. Credit A. Plumptre Usage Restrictions One-time usage only. 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.