A portrait of an adorable puppy with big round eyes and fluffy gray fur

An ultra-realistic portrait of the cutest puppy imaginable, with big, round, sparkling eyes and soft, fluffy gray fur. The puppy has floppy ears and a tiny, button nose, sitting on a cozy blanket with a playful, innocent expression. The lighting is cold and soft, giving the scene a heartwarming glow. Photorealistic, high detail, 4K resolution.