African Ass: Equus africanus - Factsheet on this critically endangered species, its description, behavior and reproduction.
African Wild Ass (Equus asinus) - Fact sheet from EDGE, a conservation organization that focuses specifically on threatened species that represent a significant amount of unique evolutionary history.
Animal Web: Equidae - Information on the Mountain, Grevy's and Plains Zebra.
Asiatic Ass: Equus hermionus - Factsheet on this wild relative of the domestic donkey, its description, distribution and biology, with several photographs.
Back from the Brink - Article about the rescue campaign for the nearly extinct Przewalski horse.
The Donkey - Research project on Equus asinus by Kelsey Wells at the University of Wisconsin-LaCrosse.
Equus caballus: The Horse - Research project by Kelsey Posta on this domesticated mammal including its classification, habitat, reproduction, adaptations, nutrition and interactions with other species.
Grevy's Zebra: Equus grevyi - Research project by Alexandra Price on this, the largest of the zebra species, including its history, habitat, reproduction, adaptations, nutrition and classification.
Onager (Equus onager) - Fact sheet from EDGE, a conservation organization that focuses specifically on threatened species that represent a significant amount of unique evolutionary history.
Plains Zebra: Equus burchellii - Factsheet on this mammal from East Africa, its description, distribution and biology, with several photographs.
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.
