[["The Brontosaurus is a dinosaur that had a long, large neck, a large body, short limbs, and a tail that was similar in shape to a whip. It could weigh as much as 50,000 pounds and measure up to 74 feet from its head to its tail.", 25.0], ["Brontosaurus (meaning \"thunder lizard\") is a genus of gigantic quadruped sauropod dinosaurs. ", 21.0]]
tell me a fact about brontosauruses
animals