The quokka is the only land mammal living on this island
Nothing can wipe that smile off his face. Meet the "world's happiest animal".
And even more
Katia Krafft is responsible for much of what we know about volcanoes
One of the strangest animals on the planet, this is the echidna
The special forces veterans turned coral reef protectors
Why do cats have whiskers?
The pygmy seahorse, a master of camouflage
This is an environmental success story