8.Saola: Asian unicorn," a rare species in Vietnam and Laos, with only a few dozen believed to exist.
7.Axolotl: Critically endangered amphibian native to Mexico City’s lakes.
6.Kakapo: Flightless parrot from New Zealand, with about 250 individuals remaining.
5.Yangtze Giant Softshell Turtle: Only three known individuals remain in China and Vietnam.
4.Vaquita: Critically endangered porpoise in the Gulf of California, with fewer than 10 left.
3.Amur Leopard: One of the rarest big cats, with around 100 individuals in the Russian Far East.
2.Javan Rhino: Fewer than 80 remain, found only in Indonesia's Ujung Kulon National Park.
1.Sumatran Orangutan: Critically endangered, with about 14,000 individuals left on Sumatra.