The global event is running over four days (September 13-16) and is expected to draw in the region of 50,000 visitors.
Organised by the International Sheep Dog Society, the trials feature 240 competitors from over 30 countries.
Here’s a selection of photos from the Co Down location.

5. World Event
Caolan Burns and his dog competing at the event. Photo: Declan Roughan / Press Eye

6. World Event
'Queen' keeping everyone in check. Photo: Declan Roughan / Press Eye

7. World Event
Caolan Burns completes the task as 'Queen' looks on. Photo: Declan Roughan / Press Eye

8. World Event
Barbro and Jenny Klingborg from Sweden at the global event held in Dromore, Co Down. Photo: Declan Roughan / Press Eye
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