Male Wild Burro (Equus assinus)....2 of 3 in set
Found throughout the North american deserts, these asses were first introduced to the Desert Southwest by Spaniards in the 1500s
Wild Burros can tolerate a water loss as much as 30% of their body weight, and replenish it in only 5 minutes drinking. (Humans require medical attention if 10% of body weight is lost to dehydration and require a full day of intermittent drinking to replenish this loss.) Reference www.desertusa.com/magjan98/jan_pap/du_wildburro.html
This Jack Ass was observed at Rhyolite, Nevada.