Extinct animals that may still roam the earth

Javan tiger (1980's)

Baiji (2006)

Thylacine (1936)

Japanese wolf (1889-1905)

Japanese river otter (unknown)

Caspian tiger (1970's)

Ivory-billed woodpecker (unknown)

Eastern cougar (2011)

Mexican grizzly bear (1964)

Passenger pigeon (1914)

Atlas bear (1870's)

Arizona jaguar (1905)

Quagga (1883)

Great plains wolf (1930's)

Malabar civet (1989)

Barbary lion (1922)