Catachan Barking Toad
The Great Barking Toad (Catachanus Bufo Moribundus) of the Death World of Catachan is considered the most poisonous creature in the entire galaxy; fortunately, it is extremely rare. Catachan Barking Toads tend to live in or near shady, dank, dark, places and extremely don't appreciate being disturbed. When threatened, it emits a cloud of toxins that kills all life within a kilometer, reducing every biological organism (including the Barking Toad itself) to a slimy, formless mass, and no vegetation will ever grow there again. The poison is so virulent it can penetrate even power armour.
The Lesser Catachan Barking Toad is the smaller cousin to the Great Barking Toad and is far less destructive, killing anything only within the immediate area.
- 1: Book of the Astronomican, pg. 1
- 2: https://web.archive.org/web/20070520074316/http://uk.games-workshop.com/warhammer40000/creature-feature/6/ (saved archive page, dated May 2007, last accessed 2 September 2017)