Elephant trainer Tim Frisco instructs would-be trainers how to dominate elephants and make them perform circus tricks. "Sink that hook into 'em. When you hear that screaming, then you know you got their attention." An elephant trumpets in agony as Frisco's bullhook, with its sharp metal hook and spiked end, tears through her sensitive skin. Frisco, a Carson & Barnes elephant trainer, learned the trade from his father, a former trainer for Ringling Bros. and Barnum & Bailey Circus.