Word: hippos
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...alive was a short-necked giraffe relative that had huge "antlers," some with a span across the horns of close to 8 ft. (almost 3 m). There were buffalo-size antelopes with massive curving horns, carnivores that must have looked like saber-toothed lions, two distinct species of hippo and at least two types of elephant, one of which had tusks that protruded downward from the lower jaw. We may never know the full extent of this incredible mammalian diversity, but there were probably more than twice as many species a million years ago as there are today...