I mean look at him, he looks like a little Bruce Lee incarnate.
The Casssowary is one of the heaviest known flightless birds in the world. They generally eat fruits, plants, grass, seeds, fungi, and the occasional small animal. Thanks to their diet, Cassowarys are known to be a keystone species in the rain forests because they help re-distribute seeds from fallen fruit after they eat them; they're known to eat fruit whole from apples to bananas. When eating however, they are territorial about their their land (up to 1,700 acres) and defend it for themselves and their mate.
So... What's the big deal? Why are these animals "likely to rip me apart?" Other than a few birds or rats every year, how do they pose a threat to me at all? Are they going to run after me and peck my eyes out in a stereotypical bird manner as depicted in cartoons, animes and humorous movie/TV scenes? Looks unlikely since I'm a highly sophisticated human that's capable of a few punches or two. The thing about Cassowaries is that they're known to be extremely shy animals towards humans unless they are disturbed. When the are "disturbed", they're fully capable of completely dominating you in footsies. (The bad kind.)