Though they have a bad rap, poinsettia (Euphorbia pulcherrima) plants are only mildly toxic to cats and dogs. Sources: During the holidays, Poinsettias are a popular Christmas plant. Mechanism of action: The milky white sap found in poinsettias contains chemicals called diterpenoid euphorbol esters and saponin-like detergents. While poinsettias are commonly “hyped” as poisonous plants, … Continue reading Are Poinsettias Poisonous to Cats & Dogs?