Gizmo, our 4-year-old border terrier, is our pet. He was given to us a year ago, and he normally gets along with everyone! He gets along with youngsters, folks with hats, and our guy with the prosthetic arm. However, those who wear sunglasses? Surely it is the devil in human form. When my brother—who is blind—came over for a visit and wore sunglasses, we found out. Gizmo lost it. He started to run around, bark uncontrollably, and refuse to let my brother close me in an attempt to trip him.
At first, we believed he despised my brother, but as soon as he removed his spectacles, Gizmo became peaceful. That evening, my partner decided to try wearing sunglasses to see if it would make a difference. Gizmo lost his mind. Thus, the spectacles are undoubtedly the cause.
Every time my poor brother visits, he has to take them off, and even though he assures me it is all right, I still feel awful.
How can I assist Gizmo in getting over his dislike of sunglasses? (And how could it have happened?) Would it be preferable to simply ask my brother to give up the sunglasses when he visits if I am unable to accomplish that?