Cassowary - World's Most Dangerous Bird...

According to the Guinness Book of Records, the Cassowaries are the world’s most dangerous birds, capable of dealing fatal blows. They are very unpredictable, aggressive creatures, especially if wounded or cornered. The Cassowary lives in the rain forests of Australia and New Guinea and are actually pretty shy animals if undisturbed, but if you get to close and it thinks you’re a threat you could receive a bone-breaking kick or get sliced by its dagger-like sharp claws. During WWII, soldiers stationed in New Guinea were warned to stay away from these birds, but some of them still became victims.

Cassowaries will not attack for no reason. But they can be territorial, very defensive of their young or be expecting food if people have been doing the wrong thing by feeding them and there is quite a list of people having been chased, charged, kicked, pushed, pecked, jumped on, and head-butted. Statistics show that most cassowary attacks were actually self defence, they are quite capable of killing dogs by gutting them with their sharp claws on their huge feet and have even been rumored to have killed small horses.

Usually cassowaries are very shy but when they feel threatened or want to protect their young they can lash out dangerously with their powerful legs and jump and kick with both legs at once.
Their three-toed feet have sharp claws; the dagger-like middle claw is 12 cm long.