The most balanced, comprehensive and current animal behavior text available.

Principles of Animal Behavior, Second Edition, builds on the first edition's reputation as a contemporary and forward-looking text with several distinct features:

• balanced coverage of proximate and ultimate factors, bolstered by a significant expansion of proximate coverage in the new edition
• thorough coverage of phylogeny and animal behavior has been added to the book's integrated view of natural selection, learning, and cultural transmission

• a focus on current research and the process of science through interviews with prominent researchers at the end of every chapter.