Extinct

The extinct Sabretooth Cat species is profiled in this episode.

The Mammoth species is revived in this episode.

Gone extinct in the 19th century, the Great Auk, a species of penguins, is explored in this episode.

Known as the "Giant Deer", the Irish Elk was last seen nearly 8,000 years ago. This episode chronicles the habits and traits of the extinct deer species.

One of the largest carnivorous marsupials known to mankind, the Tasmanian Tiger went extinct in the 20th century. This episode profiles the lives of these animals.