Charles Foster is a Fellow at the University of Oxford. Much of his life has been spent on expeditions (he ran a 150 mile race in the Sahara and skied to the North Pole), and he has written or contributed to over 35 books.
A passionate naturalist, he took on the neuro-scientific and literary challenge of living like a fox, badger, otter, deer and swift, to write his latest book, Being a Beast (Profile Books).
He talks to Kim Hill.