Three Eyelids??

Did you know that a dog has 3 eyelids? Well I didn't but I found that out when Midnight's third eyelid became infected. Poor thing, it looked awful. It is the eyelid that just goes around the eye but when it becomes infected it pushes over the eye some and it is like sandpaper on it. Well good thing I took her in because if you leave it too long it can actually make that eye blind. It looks alot better but still red. I have to put medicine in it 3 times a day. By the way the first eyelid, I believe, is clear over the eye and the 2nd is the one that blinks. Learn something new every day.