Douglas Keith Candland's interest in the psychology of presumed feral children lead to his writing the book "Feral Children and Clever Animals". He directed the Program in Animal Behavior at Bucknell University from 1960-2002. During this period, his research was chiefly with nonhuman primates, the latest studies being on their concept of number. From 2002 to 2014 he was editor of the Review of Geheral Psychology. He reviews books for 'Life of the Mind' and 'PsyCritiques'.