Can you spot the difference between an ostrich and an emu, and a leopard and an ocelot? You can! Then what are you waiting for? Take on this brain-busting nature challenge!

With more than 60 topics, from across the natural world, there's something for everyone. The pages are packed with eye-popping pictures--but do you know what they show? To help you, "Test Yourself" panels list what you're looking for. With three levels of difficulty, the challenge gets harder as you work your way from Starter, to Challenger, and finally the truly tricky Genius category. If you need it, there's a fun fact with every picture to give a helpful clue.

Open the pages of Animal Knowledge Genius to find out what you know, and challenge yourself to learn even more!