I often wonder this when thinking about the local fauna here in Australia. So much of it can kill a mammal of human size ridiculously quickly, but there really

I often wonder this when thinking about the local fauna here in Australia. So much of it can kill a mammal of human size ridiculously quickly, but there really isn't anything in the fossil record to warrant such destructive power. It's like the insects and snakes (and lots of other animals) of Australia got caught up in the equivalent of a cold war that has led to mutually assured destruction on both sides.