Border Collies have the market cornered on this one, I think. It's why they make good movie dogs.
My young girl Ann, who is working as a military runway patrol dog:
The old gentleman, Ben - he's got a zillion versions of the head tilt, depending on whether you are saying frisbee, ball, sheep, ducks, flyball, cheese, dinner, or one of hundred of other words and phrases he knows.
Cord has two modes:
With tongue . . .
And without.
More . . .