Mark Taylor / Australian Shepherd pup, age 16 weeks, in play-bow stance.

Petra Wegner / Australian Shepherd, red-tri, close up of paw touching womans hand. Model released

Petra Wegner / Australian Shepherd, red-tri, close up of paw touching womans hand. Model released

Petra Wegner / Australian Shepherd, red-tri coated, portrait sitting in snow, with picket fence behind

Petra Wegner / Australian Shepherd, red-tri coated, portrait lying in snow panting, with picket fence behind

Mark Raycroft / Australian Shepherd (Canis familiaris) in play posture

Mark Raycroft / Australian Shepherd (Canis familiaris) with blue eyes, bowing

Mark Raycroft / Australian Shepherd (Canis familiaris) portrait of panting adult

Mark Raycroft / Australian Shepherd (Canis familiaris) portrait standing on lawn

Mark Raycroft / Australian Shepherd (Canis familiaris) mother and puppy laying on grass

Mark Raycroft / Australian Shepherd (Canis familiaris) puppies on hay bale

Mark Raycroft / Australian Shepherd (Canis familiaris) two puppies sitting in grass