Cassowary
Native to the forests of Papua New Guinea and its neighboring islands, as well as some parts of north-eastern Australia, the cassowary is a large flightless bird.
This big bird is a close family member of others, such as the emu and the ostrich. It also happens to be the second heaviest bird in the world, as well as the third tallest.
If you are looking to see these birds in nature, you are going to have a bit of a tough time, as they have adapted very nicely to life in the deep forest.
Since the cassowary cannot fly, it has learned another effective way to get around, which is to run at speeds of up to 30 mph.
The cassowary is also very effective at defending itself, which it does by making use of large, incredibly sharp claws.