The Bonnacon (Bonasus calculator.) are rare north African beasts known for their foul, venomous and corrosive dung.
They are 8 to 10 feet long and 6 to 8 feet high. Bonnacon eat grasses and shrubs and, as a result of their dung, should always be approached from the front. The dung can be flung to ward off dangerous animals, although it must be done quickly as it dissolves metal. It does not affect stone, although a stone shovel may be impractical. You can also use it to dissolve metal, cure dragonhide and clear plantlife for several years. Monsterology recommends that it should never be touched.