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- Help support more content like this! Ostriches are the largest, tallest, and heaviest birds on Earth. They are famous partly because they cannot fly - but they are also the fastest runners of all birds! Ostriches also lay the largest eggs of any bird and are sometimes farmed for their meat, eggs, feathers, and leather. Like this video if you want to see more videos about ANIMALS! Thumbnail Image courtesy of Benh LIEU SONG. () Subscribe to FreeSchool: Visit us on Facebook:
