F.L. Frye & J.B. Murphy 
Health and Welfare of Captive Reptiles [PDF ebook] 

This most important book fully examines the welfare of captive reptiles and discusses the positive and negative implications of general husbandry and research programmes. The editors, acknowledged experts in their own right, have drawn together an extremely impressive international group of contributors providing clearly written and comprehensive accounts of aspects such as physiology, physical stress, diet, veterinary and environmental issues, normal behaviour, psychological stress and informed design in research.