Extinct Animal of the Week VI

Thylacine

"The thylacine was the largest known carnivorous marsupial of modern times. It is commonly known as the Tasmanian tiger, the Tasmanian wolf, and colloquially the Tassie tiger or simply the tiger. Native to continental Australia, Tasmania and New Guinea, it is thought to have become extinct in the 20th century. It was the last extant member of its genus, Thylacinus, although several related species have been found in the fossil record dating back to the early Miocene."

This one I feel particularly sad about...and despite most evidence to the contrary, I like to believe it still exists.