In the corner of the eye near the nose, there is normally a third eyelid. It often protrudes if an animal is not feeling well. If it is in the other corner, please send pictures. -Dr. Karen DISCLAIMER: This e-mail is provided for general informational purposes only. It is in no way intended as a replacement for a consultation with a qualified licensed veterinarian. If you are concerned about your pet's health, you should seek the advice of your regular veterinarian as soon as possible. [Posted in FML issue 3500]