The single greatest threat to life in Earth

[ml3]

According to Al Gore: The Manbearpig!

 

[RangerWickett]

Hm, looks kinda like a half man, half bear, half pig.

 

[jaerdaph]

Hm, looks kinda like a half man, half bear, half pig.

I have to agree with Yogi Berra and say it's 90% bear, and the other half is man-pig.