This week we learn about animal communication straight from the horses mouth. Dr Gillian Forrester, from the University of Sussex, describes how gorillas use tactile signals to communicate, Dr Katie Slocombe, from the University of St. Andrews, talks about her work on how chimpanzees use certain grunts to refer to specific food sources, Professor Joan Silk, from the University of California, discusses whether chimps are charitable to their chums, Professor Keith Kendrick from the Babraham Institute in Cambridge discusses how sheep recognise emotion, and Dr Vicki Melfi, from Paignton Zoo, tells... Like this podcast? Please help us by supporting the Naked Scientists