What should I do if my dog eats San Pedro cactus? San Pedro cactus is toxic to dogs and can cause a range of symptoms, including vomiting, diarrhea, and seizures. If your dog has ingested San ...

In that case, however, why does the towering San Pedro cactus, a distant relative of peyote that does have spines, also produce mescaline, though in smaller amounts? The biochemical pathway of ...