Usually, heat stroke can be avoided if the mule's rider or owner pays attention to avoiding situations that could cause heat stress. Conscientious management, training, housing and trailering techniques can prevent a life threatening situation. Animals who have experienced heat stroke may need weeks or even months to recover. Some feel the animal may never return to peak performance and may even been more susceptible to recurring bouts with heat stroke. Heat stroke is better prevented than treated.
Overweight mules are more susceptible to heat stroke.
Fat doesn't allow heat to dissipate very well. Limit the amount of exercise on hot, humid days. Do not work during the hottest part of the day. Ride early in the morning or in the evening. If mules must be stabled, make sure ventilation is adequate.