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Prompt

A tiny tan chihuahua in a gray knitted sweater is sitting low in the cart between two large pet food bags, surrounded by colorful bags in a bright pet-supply store aisle. Vertical 9:16 smartphone POV from behind the cart, angled downward, mild handheld shake, fluorescent lighting. The chihuahua hugs a small green tennis ball tightly against its chest and gives the camera a cute suspicious stare. A hand comes in from the right and tries to take the ball, tugging it upward/right. The dog barks/yelps dramatically and paws at the ball, then slips and flops backward into the bags with a comedic tumble. It disappears for a moment, then peeks from the lower right. Final beat: the dog pops up higher between the bags for a last bark/exclamation.