I heard Jackaroo.... If this is for www.howrse.com ~ I am marapetsfan :p
Jackaroo
For Howrse: Jackaroo
You would call him a Jackaroo.
In Australia, the terms mustering or droving are used. In North America, the general term is herding or driving or rounding up cattle.
The term herding cattle means to gather cattle into a group. This is working together to drive individual cattle from one place to another.
Blue Heelers, also known as Australian Cattle Dogs, got their name due to their distinctive blue or mottled coat and their herding behavior. The term "heelers" refers to their working style of nipping at the heels of cattle to drive them. The breed was developed in Australia in the 19th century, primarily from a mix of various herding dogs, including the Blue Merle Collie and the Dingo. Their name reflects both their appearance and their role as effective herding dogs.
A cattle drive.
herding cattle
to eat
Examples of working dogs are: police dogs, firefighter dogs, search and rescue dogs, eye dogs, and guard dogs. A herding dog herds sheep, cattle, horses, chickens (yes, there is such a thing) and pigs, and etc.
They were bred for herding cattle.
Ranch hands on horseback