Birds… You may think they are tiny pretty innocent animals, but you might be amazed. There are one bird species that attack as the velociraptor did back in prehistoric times.

No wonder the cassowary is believed to be the most dangerous bird in the world. The cassowary is native to Oceania and its size is unbelievable, especially when you think of it like a bird.

At almost 6 feet (2 meters) tall, the cassowary is equipped with huge claws designed to pierce any surface and inflict fatal injuries.

Cassowaries can be found in the tropical forests of Papua New Guinea, northeastern Australia, and some places in Indonesia. They can reach heights of 5.8 feet (170 centimeters) and weigh up to 121 pounds (55 kilograms) in males, and females reach about 167 pounds (76 kilograms).

You can identify a cassowary for its pairs of yellow eyes and blue skin. They have a very prehistoric kind of appearance. They are furry and have large wings. Despite their size and weight, they are very fast birds. They also are excellent swimmers and are able to jump really high.

They live very deep inside the density of the New Guinea jungle, making it very difficult to spy one.

However, despite their tough appearance, cassowaries are shy birds. But don’t take this the wrong way. If a cassowary is provoked, it will respond aggressively and it will triumph before its adversary due to its amazingly huge 4 inches (10 cm) claws.

Cassowary’s claws are mortal to any predator. And there’s a good reason for it. The cassowary ancestor dates back to prehistory. With their claws, these birds are able to pierce almost any surface. They usually pierce the ground to get their favorite meals: snails, mushrooms, and carrion.

So be careful next time you’re visiting New Guinea, for cassowaries are very dangerous, even to humans.