Sounds like Ice Age may have got it right. Scientists have discovered a creature that resembles a saber tooth squirrel. Yes a squirrel with giant pointy teeth protruding from it's mouth. The fossil for this creature known as Cronopio dentiacutus is over 90 million years old. Not the most exciting thing in the world but the idea of some cracked out tree rat with buck teeth creeping around in the night is a tad disturbing.