A team from the BBC has found the largest rat species in the world while filming an expedition in Papua New Guinea.  These rats are 82 cm long and 1.5 kg, making them the largest true rats in the world. They are related to rats found in cities all over the world.

Currently the rat is being called the Bosavi Wooly Rat, named for the Bosavi Crater where it was found. The rat has not been officially given a scientific name.

The expedition found many other species unique to Bosavi Crater. The crater is in Mount Bosavi, an extinct volcano deep in the island of Papua New Guinea. The isolation of the crater has lead to the a wide variety of species found only there.

For more information and to watch a video, visit BBC.com.

To view additional photos of the animals found in the crater, visit The Daily Mail.