The Chlamydosaurus kingii is a lizard that lives in northern Australia. It is also known as the fiddler lizard, neck fan lizard, etc. One very distinctive feature of lizards is that they have a neck fan similar to a scorpion's tail, which can be deployed when threatening or defending against natural enemies, making them look more powerful. But the lizards do not have two necks, but only one neck. Their neck fan is just composed of some special muscles and bones that can be expanded when needed.
The neck fan of the evil lizard is composed of some special bones, including multiple vertebrae and ribs. When lizards need to defend themselves against natural enemies or threaten, they will contract the muscles in their necks, lifting their necks and heads upwards, and open their neck fans to reveal the bright colors inside. At this time, the lizards look very powerful and can Scare off natural enemies. But when the lizard has no need, the neck fan is close to the neck and will not open.
