Ricky has been head tossing/shaking really violently when I lead him. Its only been like this for the past 3 days, and I've been dealing with it by a strong yank on the lead rope and a NO!. And I'm not kidding when I say violently. He's shaking it like a bee flew up his nose! I can't find a reason for it. There are no flies, he isn't sick.
Is it just a phase?
Also, what can I do to stop it?