Grumpy Rhino Storybook Illustration

Create a simple children’s book style illustration of a large {argument name="animal" default="rhinoceros"} standing in profile facing left in a sunny savanna. Use a bright cyan-blue sky with two blocky white clouds, one near the upper left and one near the upper right. The animal should fill most of the frame, with a chunky rounded gray body, four thick legs, a small tail with a black tuft, two pointed ears, two ivory horns on the snout with the front horn much taller than the rear horn, and a grumpy expressive face with one visible narrowed white eye, black pupil, downturned brow, nostril, and frowning mouth. Draw everything with thick rough black outlines and visible crayon, oil pastel, or hand-painted brush texture. The ground is flat golden-orange dirt with scattered details: exactly 5 dark gray rocks, exactly 5 small dry grass tufts, and a low green shrub line across the horizon behind the animal. Keep the composition clean and playful, slightly imperfect like a child-friendly storybook drawing, with no text, no watermark, and no realistic photographic rendering.