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What is the biggest animal ever known to have existed?
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Blue whale
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Mosasaurus
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Argentinosaurus
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Tyrannosaurus Rex
That's Correct!
It's Wrong!
Blue whales are the largest animals ever to have lived. They are bigger than even the largest of the dinosaurs. Mature blue whales can measure anywhere from 75 feet (23 m) to 100 feet (30.5 m) from head to tail, and can weigh as much as 150 tons (136 metric tons). That's as long as an 8- to 10-story building, and the weight of 40 elephants, 30 Tyrannosaurus Rex or 2,670 average-sized men.
