CLIVE WYNNE is Professor of Psychology at Arizona State University, USA, where he directs the Canine Science Collaboratory. He is also the Director of Research at Wolf Park in Battle Ground, Indiana, and the author of Dog is Love.

MONIQUE UDELL is Associate Professor of Animal Sciences at Oregon State University, USA. She has a special interest in the role of experience and environment in the development of cross-species interactions and bonds, including those between humans and domestic dogs. She also investigates how animal cognition and behaviour is influenced by the unique evolutionary and lifetime histories of individuals and species.