Sheepdog and flock
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How sheepdogs control unruly flocks

A farmer explains his relationship with his sheepdog, after researchers help unravel the mystery of how the animals do their job.

Researchers have used GPS data to help unravel the mystery of how sheepdogs do their job so well.

The research could be used to help develop "shepherd robots" to help in crowd control or cleaning up an oil spill.

Claire Marshall met Meiron Owen, a sheepdog owner, and found out how their special relationship worked.