Patterns in nature. Photographer Bill Adams captured some incredible photos of a white zebra named Zoe. She is extremely rare, her unusual color is due to her having amelanosis. She has beautiful gold stripes and blue eyes.
There is no such thing as a Marwari Mule. This is a Pega donkey, a breed from Brazil often used to create gaited mules (using Brazilian gaited horse breeds). -- by the way, Jumentos e Muares means Donkey's and Mules.