10 Common Houseplants Toxic to Cats and Dogs

If you have a pet that likes to nibble, avoid these plants or keep them completely out of reach.

The “Big Bad” List

1. Sago Palm: Extremely toxic. Can cause liver failure.
2. Lilies (True Lilies): Deadly to cats. Even the pollen is toxic.
3. Dieffenbachia (Dumb Cane): Causes severe mouth swelling.
4. Spathiphyllum (Peace Lily): Irritating, but not usually deadly (unlike true lilies).
5. Philodendron: Contains calcium oxalate crystals. Mouth irritation.
6. Pothos (Devil’s Ivy): Similar to Philodendron. Mild to moderate toxicity.
7. Monstera Deliciosa: Mildly toxic. Causes drooling and vomiting.
8. ZZ Plant: All parts are toxic. Wash hands after handling.
9. Aloe Vera: The gel is good for humans, but the skin is toxic to pets.
10. English Ivy: Foliage is more toxic than berries.