medium-sized black and white dog in a yard

medium-sized black and white dog in a yard. The dog is initially standing on its hind legs with its front paws resting on a concrete wall. A person's hand reaches toward the dog, and then the person whistles. The dog jumps down from the wall and looks around, wagging its tail. The dog then walks around a small plant, sniffing at the ground. The yard is sandy and has a few other plants and some buckets in the background. There is also a covered structure in the background.