What South Africa’s West Coast might have looked like 5 million years ago. In the foreground, a giant wolverine feeds on a pig while chasing away a primitive hyena.
Maggie Newman, Geological Society of South Africa and the University of the Witwatersrand
Sea otters can break the shell on a shellfish by hitting it against a stone resting on their belly. This can look like clapping. Some even have a favourite stone they carry around in their armpits.
Curator of Cenozoic Palaeontology, Research and Exhibitions, Iziko Museums of South Africa; Honorary Research associate Department of Biological Sciences, University of Cape Town