10. Dodo: the archetype of extinct species (extinct since the late 17th century)
9. Cave Lion: one of the largest lions ever (extinct 2000 years ago)
8. Great Auk: largest of all auks (extinct since 1844)
7. Aurochs: a very large type of cattle (extinct since 1627)
6. Caspian tiger: the third largest (extinct since 1970)
5. Irish deer: the largest deer that ever lived (extinct about 7700 years ago)
4. Stellar’s cow: the defenseless beast (extinct since 1768)
3. Thylacine: the Tasmanian Tiger (extinct since 1936)
2. Quagga: half zebra, half horse (extinct since 1883)
1. Tyrannosauras Rex (extinct over 65 million years ago)
According to Oddee.com