As the world's largest surviving amphibian, Chinese giant salamanders haven't changed much in their 170 million years on earth. So what does life look like for these "living fossils"?

In the Amazon and tropical places around the world, armies of stingless bees spend their days collecting nectar from plants and flowers across the forest.

Pygmy hippos are the most internet-famous species around, thanks to viral sensation Moo Deng – but in the wild these creatures are shy, elusive and incredibly rare.