A cassowary looks like a flamboyant ostrich and can be found wandering the rain forests of Australia and New Guinea. It prefers to keep a low profile, but when disturbed this flightless bird can become extremely aggressive and territorial. Capable of running and leaping at high speeds, the cassowary attacks by thrusting its large claws forward with the aim of disemboweling its target.
The cassowary can charge up to 30 miles per hour and leap more than 3 feet in the air, reports Smithsonian. The birds' claws — one curved and two straight as daggers — are so sharp that New Guinea tribesmen put them over the tips of their spears to really make their weapons dangerous.