Watch this video of the coolest dogs in the world (in my opinion, anyway)! Keep an eye on the dog on the left as it attacks a shark in Western Australia. Note the dead Dugong lying at the shoreline, which possibly attracted the shark activity.
[youtube http://www.youtube.com/watch?v=b5Mj2EJIEsY&w=560&h=349]
More on this at the news.com.au site