Wandering Adventure Party

@ShaulaEvans This thread is a treasure trove. Really great.
My "favorite" beetle is the Bombardier Beetle, who can defend himself by creating a chemical reaction which produces hot (>100°C) and toxic gases. For this purpose he has a dedicated reaction chamber at the back of his body where he brings two chemicals into reaction when threatened. All details here: https://en.wikipedia.org/wiki/Bombardier_beetle