If not what other breeds would make a good one?
Australian Shepherds can be trained as Service Dogs and perform the same work and tasks as other breeds. It is all about good breeding, temperament, character, loyalty, health, a willing attitude, and lots of training.
And If not the Breed that is wonderful I mean wonderful service dog would be
Both golden and Labrador retrievers make great service dogs. In fact, retrievers are the most common breeds trained for service work, with Labs slightly outnumbering golden retrievers. People love how friendly and loving these dogs are and how well they get along with people and other animals.