My Toothless has always had a slightly runny eye ever since I first got him. Sometimes it gets a little gookier and dark, and sometimes its just clear and really runny. I always wipe it away before I go to work, and before bed. I'm not sure if I should be concerned about it and try and find medicine for it (since it's been like this for almost a year now), or just continue dealing with it. It doesn't seem to ever bother him.