While the ASPCA states that Christmas cactus--Schlumbergera bridgesii---is non-toxic to cats and dogs, pets should not be allowed to eat the stems or flowers. Growers may treat the plant with systemic insecticides. Additionally, the sap can be a feline allergen.
About this Author
Moira Clune is a freelance writer who since 1991 has been writing sales and promotional materials for her own and other small businesses. In addition, she has published articles on eHow.com, GardenGuides.com and VetInfo.com.