It looks awful. And it can be dangerous to your dog's vision if not treated properly.
Julie Hellner of Ash Flat, Arizona, is more than a little concerned. Her seven-year-old Jack Russell-shih tzu mix, Maxwell, has had a condition called cherry eye on and off for the past four to five years. The name comes from the fact that cherry eye is characterized by a rather large reddish mass appearing on the eyeball.