Five of these appear at once so use Ice 2 to mop 'em up quickly.
Bonnacons often attack in groups of five, but are very weak with very low HP for this point in the game. Any level two spell cast on all of them should be enough to kill them, especially Fira since they are weak to Fire-elemental spells and attacks. Strago's Lore Aqua Breath also works well.
1st Turn: Attack (66%) or Nothing (33%)
2nd Turn: Attack (33%) or Digestive Fluid (33%) or Nothing (33%)
bonnacon is a mythical animal from Asia. It has curled horns and when startled sprays acidic dung that burns on contact with skin "like a kind of fire".The