Magnon’s Meanderings: Rat’s Teeth. Magnon’s Meanderings: Rat’s Teeth. 08/12/2019 admin They are Hedgehog Mushrooms; known here in France as Dents de Rat, Pied de Mouton, or Langue de Chat/Vache, and here in Périgord as Barbissou.They are very distinctive with the underside having... View full article