@video1 — source video. TOP PRIORITY: keep the person exactly as filmed. They stay in frame the entire clip, never disappear or regenerate. Preserve identity, face, hair, body proportions and clothing unchanged. Reproduce ALL original motion frame by frame: opening the door, stepping in, walking pace, head movements, facial expression, torso lean, exact arm and hand motion. Do not slow, speed up, restyle or invent movement. Match original timing, framing, angle, handheld micro-movement and runtime precisely.

Keep the entire environment unchanged: door, frame, walls, floor, room, lighting, colors, contrast, shadows. Do not restyle anything.

@image1 — reference of the animal. Add ONE animal matching @image1 (species, size, fur pattern, color, proportions). The animal is SECONDARY and adapts to the person's motion — the person does not change.

Leash: place a leash into the person's existing hand WITHOUT changing its motion or pose. Leash runs to a collar/harness on the animal.

Action: the animal is led in on the leash. As the person enters, the animal follows from behind the door, walks toward camera, growing in frame. In the final moment it comes close to the lens and sniffs it: nostrils flaring, head tilts, ears reacting. Leash stays taut on pull, slackens as the animal catches up, swinging naturally without altering the arm.

Smoothness: render as smooth 60fps, high temporal consistency, no choppy, jerky, stutter, frame skipping or stop-motion look.

Sound: soft sniffing and inhaling near the lens, quiet paw contact on floor, faint leash-clip clink.

Lighting: light the animal and leash to match @video1 (same key direction, color temperature, contrast). Add a soft contact shadow under the animal and a thin cast shadow from the leash.