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Hippopotamus, facts and photos - National Geographic
How Moo Deng the pygmy hippo is different from common hippos
Hippopotamus - National Geographic Kids
Hippo | Amazing Animals - YouTube
10 Hippo Facts! - National Geographic Kids
National Geographic - Hippo Vs Croc - YouTube
Hippos had found refuge in Uganda’s national ... - National Geographic
Hippopotamus - The River Horses | World's Deadliest | National Geographic
Hippos (National Geographic Kids Readers, Level 1) - Penguin …
Moo Deng—a purple-pink pygmy hippo... - National Geographic …
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