They are terriers and were bred to go after vermin, so the prey drive is high in some. Other's could care less. My sweet little Annie B, who was the most gentle and kind dog, turned into a fierce lion of a hunter as soon as a bunny or bird was spotted. Look at this face...
...is this the face of a killer? Yet if she could, she'd of torn them limb from limb.
Boo, rough and tumble boy that he is, never even gives them the time of day. I'd say you have yourself a right fine, first class little hunter.
