Create four delightful and enchanting line art illustrations of adorable animals for a children's coloring book. The animals should be whimsical yet recognizable, perfect for young imaginations to bring to life with color. Each illustration should feature a single animal in a playful pose, surrounded by elements from their natural habitat. Let the joy and wonder of childhood shine through in your designs. Remember to keep the lines bold and clear for easy coloring. Can't wait to see your artistic magic come to life!