These images were taken way back in 2008 when we had an amazing visit to see the chimpanzees in the Mahale forest in western Tanzania, when we stayed in the beautiful Mahale Greystokes Camp. The chimpanzees were part of the habituated ‘M-troop’, and it was a privilege to walk with the guides in the close presence of this large group of wild chimpanzees and see them in their natural habitat. The troop has been studied by Japanese researchers for many years now, so that the social hierarchy is well-understood. Most of the animals have been named by the researchers. In the time since our visit there have been many changes to the social structure as the male chimps vie for supremacy.