How silly.
Intelligence is measured in more than one way. There is more than one type.
My English Mastiff is the smartest dog. He knows when my wife gets up he can climb on the bed to sleep with me. He knows how to wake me but not her when he has to go out. If I am not home he waits. He won’t disturb her.
He knows who should and shouldn’t be in the house.
What he isn’t is active. He won’t fetch a paper,slippers, or run an obstacle course. But, neither will I.
My mastiff also. His words would be, “Obstacle course? Are you nuts?”
On the other hand, he knows who is frail, or frightened, and he is very kindly. He is safe with all sizes of children, knows who does and doesn’t belong in the yard, is good natured and looks very soft, until you see his muscles outlined when he sits.
Looks lazy, but is extremely fast. Goes from a dead snoring sleep to snapping a hot dog out of the air in a split second.
Excellent as a foot warmer, also.