Hippo in zoo photo for International Hippo Day
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Hippos are herbivores that have lived in nature for about 8 million years. There are two hippo species on Earth: the common hippo and the pygmy hippo. Here are some interesting hippo facts: they secrete a red oily substance on their skin that acts as sunscreen and moisturizer. Hippos spend up to 16 hours daily submerged in water but must surface every 5 minutes to breathe. Pixelflit provides download links for hippo in zoo photos for International Hippo Day. These semi-aquatic mammals are most active at night when they leave the water to graze, consuming up to 150 pounds of grass in 4-5 hours. Their populations are declining due to habitat loss and poaching.
