Mammoth: These enormous relatives of modern elephants roamed Eurasia, North America, and Africa during the Pleistocene epoch.
Megalodon: An extinct species of giant shark, reaching lengths of up to 60 feet, which lived in oceans worldwide.
Giant Sloth: Large ground sloths, such as Megatherium, inhabited the Americas, with some species standing over 20 feet tall when reared up.
Irish Elk: Also known as the Giant Deer, this species had massive antlers spanning up to 12 feet across and lived in Europe and Asia.
Diprotodon: A giant wombat-like marsupial that lived in Australia during the Pleistocene, reaching sizes comparable to a hippopotamus.
Gigantopithecus: An extinct species of giant ape, possibly reaching heights of around 10 feet, which lived in Asia.
Haast's Eagle: A massive predatory bird native to New Zealand, with a wingspan of up to 10 feet, which preyed on large flightless birds and possibly early human settlers.