A list of all horse breeds, complete with photos, is available at HorseChannel.com. The list is arranged alphabetically by horse breed, with links to breeders and further information about the breed.
The list provided by HorseChannel.com provides a brief history of the breeds along with the photo and information. PetMD also provides a list of horse breeds, but does not have the photos actually on the list itself. A searcher must click on the name of the breed to view the photo of the desired horse. Multiple photos are available for certain breeds. PetMD provides general information about a breed's temperament, physical characteristics and history.