Dr Harry will be attending the Clark Rubber Australian Kelpie Muster as part of the Better Homes and Gardens team, which  will be shooting an episode of the show based on the event. 

The two-day muster celebrates Casterton’s status as the birthplace of the kelpie breed and has grown to become the nation’s top working dog event.

“It seems to get stronger every year and the numbers in the street are enormous,” committee chairman John Houlihan said.

While many come for the sheer fun of seeing kelpies and their owners do battle in Saturday’s events such as the high jump and the kelpie dash, others come for the more serious purpose of buying and selling some of Australia’s best working dogs in Sunday’s auction.

Auction organiser Nicky Holmberg said 61 dogs were registered for the sale, down from 81 last year, a decline she believes has been caused by the state’s new dog breeding code.

Dogs for sale will all be demonstrated on Sunday morning.

The auction attracts the nation’s top breeders and holds the record of $12,000 for the highest price paid for a working dog.