What about their teeth?
Just as with horses, donkeys' teeth continue to grow throughout their lives and the constant chewing of roughage causes them to wear. Because equines chew from side to side in the same direction, sharp points can develop on the sides of their teeth. These points can interfere with the eating and proper chewing of food, which can in turn lead to weight loss or other digestive problems. Donkeys should be seen by an equine dentist once a year (twice a year is recommended for the very young and very old). If sharp areas are present, the dentist will “float” or file them off. This is not painful to the donkey and is usually tolerated very well.