I remember Abraxis when he was a yearling was a terrible biter. The potato trick (twice) worked, but then he nipped from time to time. I broke him of that by grabbing his nose and hand twitching him. Not really hard, but just consistantly. He hated it and finally his thick skull was penetrated and he made the connection. As a colt he was the DUMBEST Arab I had ever seen! He was so dumb, I refused free breeding to him (before he was proven). Could have kicked myself in the butt for that bright decision. He grew up to become the 1975 Intl. Arabian Stock Horse Champion... Go Figure!!! FYI, most of my Stallion experience was working with him when he was young.