INTRODUCTION: First and foremost, the Australian Shepherd is a true working stockdog, and anything that detracts from his usefulness as such is undesirable. The most important breed characteristics are overall moderation in size and bone, balance with correct proportions, and sound movement
GENERAL APPEARANCE: The Australian Shepherd is a well-balanced dog of medium size and bone. He is attentive and animated, showing strength and stamina combined with unusual agility. Slightly longer than tall, he has a coat of moderate length and coarseness with coloring that offers variety and individuality in each specimen. An identifying characteristic is his natural or docked bobtail. In each sex, masculinity or femininity is well defined.
CHARACTER: The Australian Shepherd is primarily a working dog of strong herding and guardian instincts. He is an intelligent, exceptional companion. He is versatile and easily trained: performing his assigned tasks with great style and enthusiasm. He is reserved with strangers but does not exhibit shyness. This unusually versatile stockdog works with the power and quickness to control difficult cattle as well as the ability to move sheep without unnecessary roughness. Although an aggressive, authoritative worker, viciousness toward people or animals is intolerable.
HEAD: The head is clean-cut, strong, dry, and in proportion to the body. The topskull is flat to slightly rounded; its length and width each equal to the length of the muzzle. The muzzle is of medium width and depth and tapers gradually to a rounded tip, without appearing heavy or snipey. Lips are close fitting, meeting at the mouthline. The toplines of the muzzle and topskull appear close to parallel. The stop is moderate but well defined.
- TEETH: A full complement of strong white teeth meet in a scissors bite. A level bite is a fault. Teeth broken or missing by accident are not penalized. All other missing teeth should be faulted to the degree that they deviate from a full complement of 42 teeth.