What is what breed is rusty from bluey?

Rusty is a character from the Australian children's television show "Bluey." He is a Red Heeler, also known as an Australian Cattle Dog, which is a medium-sized breed known for their intelligence, agility, and loyalty. Red Heelers are commonly used as working dogs on farms, but they also make great companion pets. Rusty is depicted as a playful, energetic, and adventurous dog in the show, often joining Bluey and her friends on their imaginative adventures.