| Animal Web: Equidae: Information on the Mountain, Grevy's and Plains zebra. |
| Back from the Brink: Article about the rescue campaign for the nearly extinct Przewalski horse. |
| International Museum of the Horse: Horse Breeds of the World: History and breed characteristics organized by continent and name. |
| National Park Service: Assateague's Wild Horses: Discusses the feral horses of Assateague Island, Maryland, USA. |
| Przewalski Horse: The wild horse from steppes of Mongolia. |
| Sable Island Horses: Describes the wild horses of Sable Island, Canada. |
| The Quagga Project: Attempts to breed through selection a population of Plains Zebras, which in its external appearance, and possibly genetically as well, will be closer, if not identical to the former population known as "Quagga", which was exterminated during the second half of the 19th century. |
| theBigZoo.com: Grevy's Zebra: Facts, photos and videos of Grevy's zebra. |
| University of Michigan Museum of Zoology: Many details and links to information about the family Equidae. |
| Wild Horses -- an American Romance: History and current state of wild horses in America. |
Classical
