Head toss

First, the neck is bent to the side, then the head is rotated 90° in an arching motion toward the dog's back, then again forward. This a behaviour that is exhibited only rarely, and under conditions in which the dog is frustrated.
(Walters, 1996; Koler-Matznick, 2005)

VIDEO

large screen
This female Irish Terrier is resting her paws on a kitchen shelf, and can smell the presence of food. She exhibits a head toss.

head shaking<>high pitched barking