Known As:  Peyote
Latin Name:  Lophophora williamsii
Description: Small, spineless, turnip-shaped cactus.  Has greyish, mushroom-shaped tops called Peyote or Mescal Buttons
Poisonous Parts:  Tops or Mescal Buttons.  9 different alkaloids of which mescaline is the principal agent.
Symptoms: Hallucogenic.
Treatment: Contact your veterinarian.