Illustrate a whimsical anthropomorphic hippopotamus, radiating joy and happiness in a vibrant, colorful setting. The hippo, with a jovial expression on its face, sports a dapper bow tie and a top hat adorned with a cheerful sunflower. Its large, round eyes gleam with mirth, while a wide grin reveals rows of gleaming white teeth. The hippo's chubby cheeks are rosy and flushed with delight, exuding a sense of contentment and joy. Its stout, barrel-like body is adorned with a colorful waistcoat, adding a touch of whimsy to its ensemble. In the background, a lush, verdant meadow stretches out, dotted with cheerful wildflowers and fluttering butterflies. The warm, golden rays of the sun bathe the scene in a soft, inviting glow, bringing to life the joyful spirit of the anthropomorphic hippo.