Cumbrian hill farmer Derek Scrimgeour believes that all sheepdogs are born special.
But some are exceptional.
That's why so much of his time is spent looking for such dogs to train - both for farm work and for trialling.
His new system for training border collies is turning him into an international star - 'The Sheepdog Whisperer'.
Clare Jenkins follows him as he puts dogs - and their handlers - through their paces, pointing out the rights and wrongs of rounding up sheep.