bonasus

A wild beast of Paeonia that has a mane like a horse but otherwise resembles a bull. Its horns are curved inward with their tips toward the head and are of no use in fight. When attacked, it runs to safety, emitting a trail of dung at intervals for the distance of three furlongs; contact with it will scorch its pursuers like fire.

References

Source

  • Pliny the Elder. Naturalis Historia viii, 2.1.