What are wild burros doing to Death Valley? — High Country News – Know the West
Mules and Mountain Men — Frontier Life
The cowboy way: Unpredictable mules vital to survival in Arizona's remote Saguaro National Park
Difference Between a Donkey and a Mule - Helpful Horse Hints
8 Reasons to Get to Know the Wild Burros of Nevada
Donkey vs. Mule vs. Hinny: A Look at the Differences - Helpful Horse Hints
Keeping it wild: how mules help preserve the last untamed places in the US | Environment | The Guardian
15 Fun Facts About Mules - Horse Illustrated
What's the difference between a horse, a donkey and a mule? - CBBC Newsround
Of Jacks and Jennets: Facts About Donkeys - The New York Times
About Equine Crosses, Mules, and Other Hybrids - PetHelpful
Donkey - Wikipedia
About donkey breeds | The Donkey Sanctuary
About Equine Crosses, Mules, and Other Hybrids - PetHelpful
What is the Difference between a Horse, Mule and Donkey?
Wild Burros Killed in California Desert: Reward Offered | Time
Keeping it wild: how mules help preserve the last untamed places in the US | Environment | The Guardian
Mule Facts
Thinking with Mules and Hinnies as Life Overlooked – Humanities for the Environment
Reasons why Mules rule | Brooke
Reasons why Mules rule | Brooke
