[qam1]

Considering that mammoths went extinct 11500 to 11000 years ago, sabertooth cats 10,000 years ago, and Megatherium 8,000 years ago. A comet killing them off over a period of 2,000 - 5,000 after it hit while leaving all other animals intact would be a good trick.

Plus it's amazing how Alligators are always near ground zero for these Asteroid/Comet hits, yet they always manage to survive unscathed.

[Red Badger]

They go on long vacations:

http://news.bbc.co.uk/2/hi/asia-pacific/7805080.stm

[TalBlack]

“Plus it’s amazing how Alligators are always near ground zero for these Asteroid/Comet hits, yet they always manage to survive unscathed.”

4 functioning brain cells, a bullet-proof hide and that smile they wear no matter what’s going on.