Persian asses live in flat desert regions and surrounding foothills. These harsh, barren regions are hot during the day and cool at night, with little rainfall. Persian wild asses are herbivores feeding on foliage, grass, herbs and bushes. They receive most of their necessary water from these plants. Amongst these, green fresh grass forms their favourite food.
Asses usually graze in the morning and afternoon when it's cooler.
The ass is well-adapted to its environment, with high crowned molars that can grindtough food and which regrow as they are worn away. The ass also has a gut which contains the tiny microscopic protozoa, which helps digest grasses inedible to other animals. Also, compard to other mammals of similar habitat, asses need to drink more water. During hot summer days, they drink water nearly every day from springs which are less than 20 kilometers from their grazing land. Mating takes place in mid-June.