J. Warren Evans is Professor of Animal Science at Texas A&M University, where he directs the equine reproduction program. For over 15 years he taught horse production and management courses at the University of California, Davis. A past president of the Equine Nutrition and Physiology Society, he is also author of The Horse (from W.H. Freeman) with A. Borton, H.F. Hintz, and L.D. Van Vleck.