Active self-treatment of a facial wound with a biologically active plant by a male Sumatran orangutan - Scientific Reports

They missed that thing on Matabele ants treating wounds on each other with antibiotics. The ants have done this for so long that they've evolved goo pockets to hold their ant-ibiotics https://www.uni-wuerzburg.de/en/news-and-events/news/detail/news/ant-antibiotics/