What was the largest dinosaur?

It is believed that the Brachiosaurus is the largest dinosaur that ever lived. It is also the largest species in which a whole skeleton has been discovered. This skeleton is in the Humboldt Museum in Berlin and measures 73 feet long and 46 feet tall. Its estimated weight is 35 tons, or about 70,000 pounds.

The Brachiosaurus was a four-legged non-carnivorous dinosaur with a long neck and very long tail. It lived about 155 to 120 million years ago.