The puppies are now six months old and are very busy developing their stalking livestock techniques and learning manners and basic calls.

With the 12 month experiment now complete, the Australian Border Collie siblings reunite to face their final challenge. It's neck and neck but one dog shines brighter than the pack and is crowned Champion Muster Dog.

It's spills and thrills as the puppies and trainers stumble and at times leap through the milestone challenges. Frank and CJ are going well but Joni, Aticia and Rob are off to a bumpy start.

At ten months the dogs have hit puberty and are starting to show some teenage rebelliousness. There are mixed levels of success in the assessment, and one of our pups falls gravely ill.

At seven months, the pups have a strong bond with their handlers. But they face big tests as they learn to herd livestock and respond to calls. The results are certainly surprising.

The pups are starting to develop their own unique personalities and building a good bond with their owners, while training for the five-month assessment is well underway.

In a high-stakes showdown between Team Collie and Team Kelpie, our six participants and their pups step through the five-month assessment tasks. They grapple with training challenges and personal bonds as surprises unfold.

As the puppies settle into their new homes and the five-month assessment approaches, the six handlers find themselves struggling to navigate personal challenges and training hurdles.

The mentors evaluate Team Collie and Team Kelpie during their ten-month assessments. With just two months remaining, the competition intensifies as everyone strives to perfect their skills for the final assessment.

The puppies are now one year old and have all gathered with their owners to complete their final 12-month assessment. One pup shines brighter than the pack and is rightfully crowned Champion Muster Dog!