Blue Whale - The largest animal in the world, reaching lengths of up to 100 feet (30 meters) and weights of up to 200 tons.
African Elephant - The largest land animal, with males weighing up to 14,000 pounds (6,350 kg) and standing up to 13 feet (4 meters) tall at the shoulder.
Giraffe - The tallest animal, reaching heights of up to 18 feet (5.5 meters).
Saltwater Crocodile - The largest living reptile, with males growing up to 23 feet (7 meters) long and weighing up to 2,200 pounds (1,000 kg).
Hippopotamus - One of the largest land mammals, with males weighing up to 4,400 pounds (2,000 kg).
Polar Bear - The largest living carnivore on land, with males weighing up to 1,500 pounds (680 kg).
Anaconda - The heaviest snake in the world, with some individuals weighing over 550 pounds (250 kg).
Ostrich - The largest bird in the world, with males standing up to 9 feet (2.7 meters) tall and weighing up to 350 pounds (160 kg).
Komodo Dragon - The heaviest lizard in the world, with males weighing up to 366 pounds (166 kg).
Whale Shark - The largest fish in the world, growing up to 40 feet (12 meters) in length and weighing up to 20,000 pounds (9,000 kg).