You probably don't worry too much about birds (other than what birds are at your feeder). However, around the world there are ...

Add Yahoo as a preferred source to see more of our stories on Google. A southern cassowary stands on a beach at Etty Bay in Queensland, Australia. These endangered birds can live up to 50 years.

The investigative minds at How to Survive explore aggressive cassowary attacks, defensive tactics, and survival strategies.