Many animals went extinct in the 20th century, including the following. For a complete list click here. Passenger Pigeon Arizona jaguar Bali tiger Barbary lion Caribbean monk seal Caspian tiger Culebra Island parrot Falkland Island fox Ivory-billed woodpecker Japanese wolf Laughing owl Desert rat kangaroo Narborough Island tortoise Madagascan serpent eagle Seychelles swallowtail butterfly…