"This introduction to 'the liveliest aspect of all that lives' (as Konrad Lorenz famously called behavior) covers all the angles one would expect from a biologically oriented approach. It will be of tremendous value to any student seeking to explore what questions this field of research addresses and the many useful insights and concepts it has developed."
Frans de Waal, Emory University, Atlanta
"Combining the best of classical ethology with modern developments in behavioural biology, the sixth edition of a famous textbook is enormously welcome. I strongly recommend this beautifully written and illustrated book to students of all ages."
Patrick Bateson, University of Cambridge