Large Head Competition

This adorable pooch belongs to Professor K.M., who obviously takes her responsibilities as a dog owner more seriously than we do. Bobo would die to go on a hike like this:

K.M. asserts the primacy of her doggie's head over Iain's. You decide: Iain, Gaint-Headed Moose, or Waggy McCutie-Pants here? Quien es mas grande?

[I note that Professor M. hasn't tried to put her Bates History hat on McC-P. Chicken.]

[UPDATE: Professor M. replies: "Ms.Gracie does not have an oversized head, but a freakishly over-sizedtongue. It's like she was shopping for it in the Marden's bargain binand they only had Bobo-size."]