Bonnie, a sleek border collie mix, is practically vibrating with excitement. After getting a signal to start her search, her owners release her. She bounds, snuffling and wriggling, to a stainless-steel wheel, roughly 4 feet in diameter, with 12 numbered ports along its edge. Upon locating her target, she crouches down to signal her find, only to spring back up as she hears a mechanical click and cries of, “Good girl! Well done!” She finds her owner to receive a treat, and then gets ready to do it all over again.