"The goals of this book are well defined in the introduction. These goals are important and will certainly be appreciated by almost anyone encountering or interested in naturalistic environments—including regulatory and animal care personnel as well as researchers and students of animal behavior. The editors successfully integrate material covering regulatory aspects of animal care, environmental design and management, approaches to naturalistic housing, and the scientific evidence of the impact of these elements on animal behavior. This approach provides an interesting, useful, and well balanced mix of perspectives." — Tina M. Widowski, University of Guelph, Ontario, Canada