Egg-laying mammals and peacock spiders: Meet some of Australia's weirdest creatures

Australia is packed with species that, to the rest of the world, don't make a lot of sense.

This is because these strange species often aren't found anywhere else on Earth. About 87% of Australia's mammals, 93% of its reptiles and 45% of its bird species can be found only in Australia, according to the Australian Wildlife Conservancy.