Bulls in Teddy's eyelids may be caused by bacterial infection, allergies, inflammation or disease. Owners should pay attention to check whether there are foreign objects or injuries in the dog's eyes. If so, it is best to take them to the pet hospital immediately for professional treatment. During the treatment, the dog should wear an Elizabethan ring to prevent itching and scratching of the dog's eyes from affecting the recovery. The dog's diet should also be adjusted to be as light as possible and guide the dog to drink more water.