They are a test of dog and man.
A farmer's dogs are the tools of the trade, and the annual dog trials are the opportunity to test their skills, according to St Bathans Collie Club life member Murray Heckler.
The Omakau shepherd took part in the St Bathans Collie Club's dog trials at Dunstan Burn Station, near St Bathans Domain on Monday 14, keeping a close eye on the action on the hills.
While farming may have become more technology-focused, Heckler said he was more "old school".
"The dogs are really a part of our life, especially on hill country and stuff - you won't get the sheep in otherwise.