Jaymi Heimbuch / Domestic Dog (Canis familiaris) named Hooper, a scent detection dog with Conservation Canines, carrying toy, Oregon Dunes National Recreation Area, Oregon

Mark Raycroft / Border Collie (Canis familiaris) playing with a ball in the snow

Mark Raycroft / Black Labrador Retriever (Canis familiaris) adult with a retrieving training dummy in its mouth