What do pangolins and peacock spiders have in common? They are weird! But weird can mean many different things. Pangolins are mammals, but sometimes people think they are reptiles because of their unusual scales. Peacock spiders do funky dances to find mates. An animal might seem strange because of how it looks, how it acts, or even how it compares to other members of its species. From unique traits to unusual behaviors, explore the many ways animals can be weird and catch an inside glimpse of some of the oddest animals in the world.