References

C. Vilà, J. A. Leonard, A. Götherström, S. Marklund, K. Sandberg, K. Lidén, R. K. Wayne, and H. Ellegren
Widespread Origins of Domestic Horse Lineages
Science, January 19, 2001; 291(5503): 474 - 477.

Edwards, E. H. (1993). Horses. New York: DK Publishing.

James, R. B. (1990). How to be your won Veterinarian (sometimes). Mills, WY: Alpine Press.

 Hunter, Pam. Telling a Horse's age from Its Teeth. Accessed 21 Apr. 2008 <http://www.petpeoplesplace.com/resources/articles/horses/005-01.htm>.

Myers, P. 2001. "Animalia" (On-line), Animal Diversity Web. Accessed April 24, 2008 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Animalia.html.

Oh-Willeke, Andrew. Wash Park Prophet. Accessed 14 Apr. 2008 <http://washparkprophet.blogspot.com/2007/09/lions-wolves-and-horses.html>.

Patterson, David J. and Sogin, Mitchell L. 2000. Eukaryotes. Eukaryota, Organisms with nucleated cells. Version 08 September 2000.http://tolweb.org/Eukaryotes/3/2000.09.08 in The Tree of Life Web Project, http://tolweb.org/

Judith, D. (2003). Complete Book of Horses and Riding. Barnes & Noble.

Pickernal, T. (2001). The Encyclopedia of Horses and Ponies. London: Parragon Publishing.
The domestic horse. 12 Apr. 2008 <http://tolweb.org/treehouses/?treehouse_id=4223>.

Thomas, H. S. (2000). Storey's Guide to Raising Horses. North Adams, MA: Storey.