Create a black-and-white line art coloring page featuring all the Big 5 animals. Place an elephant in the top left corner, a lion in the top right corner, a rhino in the bottom left corner, and a buffalo in the bottom right corner. Place a leopard anywhere else on the page. Include a simple, minimal, uncluttered background such as a few clouds, sparse grass, or a couple of rocks. The animals should be cute and simple, with bold, clean outlines suitable for children to color. No text, captions, speech bubbles, or other lettering. Keep the overall page clear and easy to color with lots of open space.