An ultra-realistic portrait of a cute puppy with big eyes and fluffy white fur, sitting on a book.

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