A wide variety of the exotic animals evolved on Earth over the past 60 million years Riley Black - Science Correspondent The tusks of ancient elephants came in a variety of shapes and sizes.

Elephant tusks are both a valuable tool and a potential liability for these gentle giants. The desire for ivory has made elephants popular targets for illegal poaching, and it can have a ...

If you have two tusks, elephants can get locked head-to-head. If you have one tusk you’re a bit sneaky and you can come round and stab the guy in the side: that sometimes ends the fight ...