13. Frill-Necked Lizard
The frill-necked lizard is famous for its dramatic defense mechanism, where it displays an impressive frill around its neck and hisses to ward off threats. Despite this fierce appearance, the lizard is typically non-aggressive and prefers to escape rather than fight. Native to Australia, this reptile spends most of its time in trees, using its frill mainly as a deterrent rather than an aggressive tool, highlighting its peaceful nature.