When you think of a giant animal, you probably imagine an elephant or a giraffe, but they aren't the biggest creatures to have wandered our planet. There were others that had unique features which allowed them to grow to incredible sizes. A farmer stumbled upon a giant leg bone while tending his cattle - that's how he discovered the first fossils of the Argentinosaurus. The Spinosaurus is believed to be one of the largest carnivorous dinosaurs to ever exist. But are there any currently living giants?

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