Cornell University 
Educational materials for horse owners includes a guide to equine colors and markings, plants poisonous to horses, and calculating age from a tattoo number.
http://web.vet.cornell.edu/public/cuerp/edu.htmWhite Horse Farm Equine Ethology Project 
Features illustrated articles and forum discussion on the psychology and behavior of the horse. Subjects include evolution, social behavior and welfare, learning, body language, grazing, family, history of horse Whispering, and history of the Thoroughbred. Also provides related links.
http://www.equine-behavior.com
World Undergraduate Equine Research Database 
Summarised information related to undergraduate equine research conducted, primarily in the United Kingdom, since 1995.
http://www.wuerd.org/
University of Kentucky Equine Research Foundation 
The dual purpose of the Foundation is to facilitate the exchange of information with the equine industry and to secure funding for equine research at the University. Includes newsletters and research information. Kentucky, United States.
http://www.ca.uky.edu/agcollege/vetscience/ukerf1.htm
The Journal of Equine Studies and Equestrian Education 
A peer reviewed scientific journal which publishes articles and the results of experimental scientific studies related to the training of horses and riders.
http://europauniversitypress.co.uk/journal
Equine Research Foundation 
A non profit organisation dedicated to the advancement of knowledge about Equines. Scientific studies into learning and a scholarly approach to horse behavior and intelligence.
http://www.equineresearch.org/