A dog with whale eye after he caught sight of himself in a mirror. This is a warning message to the dog in the mirror to stay away I might attack. It's also a sign that the dog is anxious and possibly fearful. Whale eye refers to the white part of the eye showing as in the photo below. Not easy to detect in all breeds because of the shape of their faces, so, you have took look for other signs that this dog may be stressed or fearful.