Interest in the Issa chimpanzee microbiome began with Jeff Leach (The Human Food Project) in 2014, and has expanded since. We are currently looking into multiple questions answered by the microbiome with Frank Moller Aarestrup at the National Food Institute at the Technical University of Denmark. More recent collaborations on comparative microbiomes have been fostered with Katherine Amato (Northwestern University) and Helen Chaterjee (University College London). These centre on taxonomic composition, function, inter-individual differences, and the role of the environment, e.g. drier, savanna-mosaic habitats, captivity, etc.