Elephant:There are several species of elephant, and the largest can reach heights of up to 12 feet and weigh up to 12,000 pounds.
Shastasaurus:is the largest known marine reptile that ever existed. This carnivore lived in the ocean 200 million years ago and fed primarily on squid. The largest was over 60 feet long.
Paraceratherium: only much taller and without a horn. The Paraceratherium was about 16 feet high and 24 feet long, and its diet was mainly the leaves of tall trees.
Chinese Giant Salamander:These animals are about the same size as the average human lying down, growing just under six feet in length and weighing just over 110 pounds.
Jaekelopterus:An aquatic scorpion that lived about 460 million years ago, the Jaekelopterus was a sea creature that reached a length of around three yards.
Patagotitan mayorum:This titanosaur was a herbivorous dinosaur that lived about 100 million years ago, with a very long neck and a very long tail.
Argentinosaurus:was also discovered in Argentina, back in the 1980s. Based on the bones that have been found, it was about the same length as the Patagotitan.
Polar Bear:The biggest land predator animal currently alive is the Polar Bear. These massive arctic creatures can grow to be over eight feet tall.
Spinosaurus:This meat-eating dinosaur lived about 90-100 million years ago. It was about 60 feet long, 12 feet high, and weighed at least seven tons.
Blue Whale:Though it rarely happens now due to fishing of the larger specimens, the Blue Whale can reach a length of up to 100 feet.