THE humble working dog will be celebrated at the 23rd annual Australian Kelpie Muster this weekend.
Thousands are expected to flock to Casterton from June 8-9 for the highly-anticipated event.
The muster includes the family-friendly Kelpie Festival on Saturday and showcases the Australian Premier Working Dog Auction on Sunday.
It is the Saturday festivities which stop traffic with the street closed off as kelpie owners show off their dogs' unique abilities in a series of endurance and skill tests.
Among the attractions are the Kelpie Hill Climb, an action packed race up Casterton's iconic Blueberry Hill racing around the Fleur de Lee.
There is also a Stockman's Challenge, which includes an obstacle course for horse, rider and kelpie to complete.
"The Australian Kelpie Muster is unlike anything else in Australia," Casterton Kelpie Association president Karen Stephens said.
"Our town comes to a standstill to celebrate this iconic and much-loved working dog which was born here and has assisted to completely transform Australian agriculture."
A total of 66 dogs, including some of the country's most successful kelpie breeders, will go under the hammer from 3pm on Sunday following five hours of yard demonstrations at Island Park.
During these displays vendors showcase the agility and overall skill set of kelpies in herding sheep.
That is followed on Monday by a Working Dog Training School with some of the country's best trainers sharing their best tips.
A crowd of more than 2000 people is expected to attend the auction showcase, travelling from as far as New South Wales and South Australia to purchase dogs.
Casterton's picturesque landscapes, beautiful nature and quintessential Australian culture will be showcased at the True Blue Art Show as part of the Australian Kelpie Muster.
More than 80 entries have been submitted.