Blue Whale (Balaenoptera musculus): The blue whale is the largest animal known to have ever existed, reaching lengths of up to 100 feet (30 meters) and weights of up to 200 tons. It is also the largest known vertebrate.
African Elephant (Loxodonta africana): The African elephant is the largest land animal, with males reaching shoulder heights of up to 13 feet (4 meters) and weighing up to 12,000 pounds (5,400 kilograms).
Giraffe (Giraffa camelopardalis): The giraffe is the tallest living terrestrial animal, with males standing up to 18 feet (5.5 meters) tall, although most are around 16-18 feet (4.8-5.5 meters).
Saltwater Crocodile (Crocodylus porosus): The saltwater crocodile is the largest living reptile, with males reaching lengths of up to 23 feet (7 meters) and weights of up to 2,200 pounds (1,000 kilograms).
Giant Squid (Architeuthis dux): The giant squid is one of the largest invertebrates, with specimens reaching lengths of up to 43 feet (13 meters), including its tentacles.
Japanese Spider Crab (Macrocheira kaempferi): The Japanese spider crab has the longest leg span of any arthropod, reaching up to 12 feet (3.7 meters) from claw to claw.
Siberian Tiger (Panthera tigris altaica): The Siberian tiger is the largest living cat species, with males reaching lengths of up to 10 feet (3 meters) and weights of up to 700 pounds (320 kilograms).
Colossal Squid (Mesonychoteuthis hamiltoni): The colossal squid is another giant cephalopod, with specimens known to exceed 30 feet (9 meters) in length.
Komodo Dragon (Varanus komodoensis): The Komodo dragon is the largest living lizard species, with males reaching lengths of up to 10 feet (3 meters) and weights of up to 200 pounds (91 kilograms).
Green Anaconda (Eunectes murinus): The green anaconda is the heaviest snake species, with females reaching lengths of up to 20 feet (6 meters) and weights of over 500 pounds (227 kilograms).