The Bonnacon is also mentioned in a number of medieval Bestiary’s including a fully-illustrated Latin manuscript currently held at the Bibliothèque Nationale. This creature is also described in the famous Aberdeen Bestiary, written and illustrated in England about 1200 AD, and is considered to be one of the best examples of its type. This document describes the Bonnacon as an Asian beast whose head is like a bull but with horns curled inwards. Also referred to as the Bonasus or Bonacon, medieval illustrations of the beast’s skin are almost always depicted as reddish in colour and lacking any signs of hair. As in previous descriptions this beast expels burning dung when threatened and the illustration in this Bestiary shows the wise hunter protecting himself with his shield.
I love the Internet. Sometimes you can find some real gems of information... and other times you find Napalm excreting Bison.