You might not be able to get enough of Moo Deng and her sassy antics, but there's so much more to learn about these elusive creatures. Discover why the pygmy hippo's skin is always shiny, the surprising aquatic mammals that they're closely related to, and why their unusual toilet habits help support the ecosystem. You'll also discover the threats they face in their natural habitat and how you can help. Filled with simple science and plenty of animal facts, it's a must for all pygmy hippo fans!