These dogs have drive

I always do go the last weekend of the National Western Stock Show to catch the stock dog trials. Usually I watch the sheepdogs, but managed to catch the cattle dogs this year.

The dog has to take three (mutually unacquainted) steers between two barrels to his owner, then away from his owner through a chute, then into a pen at the far end of the arena, then get the steers into a trailer. The owner has to stay right by the trailer the whole time, either whistling or shouting commands.