They may not be HUGE but they are unusual in shape and size: Jerboas are technically desert dwelling rodents who live primarily in Northern Africa and Asia, but let's face it- they might actually be the cutest animals in existence.
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.
Einstein Horse is the world smallest horse living in planet Earth. In the photo below, you'll see four-year-old boy Garrett Mullen watching Einstein, the three-day-old pinto stallion that is considered as the world's smallest horse.