422Pet studio ID portrait

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Output size 1080x1440 pixels, 3:4 portrait, social media post.
Create exactly one photorealistic pet studio ID portrait, a single head-and-upper-chest view. Default aspect ratio 3:4. Center the pet straight toward the camera, eyes strictly on the same horizontal line, no head tilt or diagonal muzzle, both ears fully inside the frame. Fill the frame naturally with modest space above the ears. Use a clean seamless solid background, soft diffused studio lighting, detailed natural fur and realistic anatomy. No collage, borders or mockup.
PHOTO RULE: use the attached single dog or cat photo as the identity reference. Preserve its fur colors, asymmetric markings and their side, ear shape, eye color, muzzle shape and facial proportions. Change only pose, background, lighting and the selected clothing. Do not mirror the pet or replace it with a generic breed. Photo note: "【Photo】". This note identifies the attached photo; never print it. If no photo is attached, invent one fictional cream-and-apricot toy poodle with dark brown eyes and complete the portrait without asking for a photo.
BACKGROUND: "【Background color】". Sky blue = solid pale sky blue; Gray = solid light gray; White = solid clean white. If blank, use white.
OUTFIT: "【Outfit】". None = natural fur only; Shirt collar and tie = plain white shirt collar and small navy tie; Ribbon = small dusty-rose ribbon; Hanbok collar = simple ivory crossed hanbok collar with pale sage edge, no embroidery or symbols. If blank, use none. Keep clothing below the face; never cover ears or change anatomy.
EXPRESSION: "【Expression】". Calm = closed mouth and relaxed gaze; Slight smile = gently relaxed mouth corners, for a dog a slightly parted mouth is allowed, for a cat keep the mouth closed. If blank, use calm. Retain animal facial anatomy; no human teeth or human smile.
No text, names, letters, numbers, labels, logos, trademarks, watermarks, signatures, real characters, celebrities or people. Output only the finished single portrait.

[Final output format]
Output size 1080x1440 pixels, 3:4 portrait, social media post.
This selected output format takes priority over any fixed canvas size or aspect ratio elsewhere in this template. Adapt the composition, text zones and margins to the selected canvas without stretching or cropping essential content. Device safe areas apply only when a device is selected. Never print these format instructions on the image.