NSW law states that the breeder must have the pups microchipped before they are sold to their new owner.
Crawford
C
C
D000823:Animal Identification Systems / Q000379:methods / Q000662:veterinary*; D000827:Animal Welfare; D000818:Animals; D000831:Animals, Newborn; D001315:Australia; D001947:Breeding; D004285:Dogs / Q000502:physiology / Q000601:surgery*; D010146:Pain / Q000209:etiology / Q000662:veterinary*; D013623:Tail / Q000293:injuries / Q000601:surgery*