Hello SamtheSquirrel! I am sorry for the confusion - a meant Lower teeth, not upper. His upper teeth are, what seems to be, broken off. He only have very short, upper teeth with serrated edges.
Here is the picture.
The one time i saw a white tear, recently, it was on his good eye, and it shed as i was watching, it was creamy white, did not see any yellow in it. Pus has to be yellowish, or not pure white, right?
Did not see Kuzia breathe through mouth, or scratching nose, or some other problem with nose.