I wouldn’t want to be a bettong.

Dung beetles are often referred to as “donor species” because they utilise faecal matter produced by vertebrates.
One species took it to another level. Onthophagus peranelinus has adopted a very different strategy for getting its meals served hot and fresh by living in a commensal association with Rufous Bettongs (Aepyprimus rufescens). The fascinating facet of their relationship is that the dung beetles opportunistically hitch a ride on the bettongs. Once on board, they move to the host’s posterior where they patiently wait for the bettong’s bowel movement. Once the small rounded pellets hit the ground it’s a signal for the hungry dungies to let go, drop off and enjoy the feast!

Up to 63 beetles were recorded on a single Bettong. Their specially modified claws (tarsal segments) allow the beetles to grip firmly the fur around the cloaca and groin so they do not fall off during the bettong’s kangaroo-like hopping motion.