This is an account of feral children - those brought up with no human contact, sometimes raised by wild animals, unable to speak or perform many of the functions we consider human. The cases discussed include those of Kamala and Amala, twin girls reputed to have been brought up by wolves in India in the 1920s; Genie, a girl kept in a single room in New York; a boy raised in a hen house in Northern Ireland; and a boy found among wild dogs in Moscow.