All I'm thinking is that the correct term to display a lack of positive emotion would be ambivalence. Well actually that's more a balance of positive and negative but I'd find it difficult to believe that unless you passionately dislike dogs that you'd be blind to their positive aspects and hence ambivalence would be the closest word for accuracy.
Also what came to mind is that if the other person is standing in the shade and you are standing in bright sunlight then to you the shade looks darker than it does to them where as to them the sunlight looks brighter than it does to you..
Do you see where I'm seeing a difference?
(This is usually why I list my type as 9 instead of INTP btw.. The obsession with balance over-rides the normal INTPness)