The dog's slightly upturned lips, combined with its gentle gaze, create a warm and happy atmosphere. The brushstrokes are delicate and expressive, blending realism and freehand style. The richly detailed fur, warm lighting, and simple background imbue the painting with a sunny warmth. This style not only highlights the dog's cuteness and approachability but also fills the artwork with a sense of happiness and tranquility; the dog's joy can be felt in its eyes.