When the mole breaks his glasses, the amount of glass broken out of the frames changes between shots.
The amount of honey on the mole changes significantly from when the first two bears are licking the honey off him and when the third bear in the tree "steals" the mole.
While the little mole can barely see beyond his nose, mother mole's vision is sufficiently acute for her to spot her son on the creek bank 20 or 30 yards away.