Is Philodendron Toxic to Cats and Dogs?

Short answer: yes. Every philodendron — heartleaf, brasil, pink princess, tree philodendron, the lot — is toxic to cats and dogs per the ASPCA. Like its cousins pothos and monstera, it carries insoluble calcium oxalate crystals that cause immediate mouth pain. Here's how bad it really is and what to do if your pet takes a bite.

What is philodendron, exactly?

Philodendron is a whole genus of tropical aroids — hundreds of species, from the trailing heartleaf (Philodendron hederaceum) to the big split-leaf types. They're prized for being nearly unkillable, which is exactly why they end up in reach of pets. Note that the plant sold as "split-leaf philodendron" is often actually a Monstera — different plant, but conveniently also toxic, so the confusion doesn't change the safety answer.

• Intense oral burning & pawing at the mouth — the calcium-oxalate crystals cause immediate pain, so pets often paw their face or shake their head
• Drooling — heavy, sudden
• Vomiting and decreased appetite
• Difficulty or pain swallowing
• Swelling of the lips, tongue or mouth — in rare, severe cases this can affect breathing and is an emergency

The pain is usually immediate, which — grim silver lining — means most pets stop chewing quickly and don't eat a large amount.

What to do if your pet ate philodendron

1. Rinse their mouth gently with water if they'll let you, and wipe away any plant bits. This helps flush the crystals.
2. Offer something cold — a little milk, yogurt, or cold water can ease the oral burning.
3. Note how much they ate and when.
4. Call your vet, or the ASPCA Animal Poison Control Center at (888) 426-4435 (a consultation fee may apply). Say the name: "Philodendron."
5. Do not induce vomiting unless a vet tells you to.
6. Go in immediately if you see mouth swelling, trouble breathing, or repeated vomiting.

Pet-safe plants to keep instead

You don't have to give up greenery. These are non-toxic to cats and dogs per the ASPCA:

For the full picture, see our cat-safe houseplants verified against the ASPCA and how to identify toxic plants for dogs and cats.

The bottom line

Philodendron is toxic but rarely dangerous — the crystals hurt enough that most pets quit after one bite. Keep trailing varieties off the floor and up out of climbing range. If you have a cat that treats every dangling vine as a toy, a spider plant gives you the same look with zero toxicity.

FAQs

Can philodendron kill a cat?

It's very unlikely to kill a healthy cat. Toxicity is usually mild to moderate — mouth pain, drooling, vomiting. The one scenario that needs an emergency vet is significant swelling of the mouth or throat that interferes with breathing, which is rare.

Is philodendron more toxic than pothos?

They're essentially the same risk — both are aroids with insoluble calcium oxalate crystals, and the ASPCA lists both as toxic to cats and dogs with the same symptoms. Neither is meaningfully more dangerous than the other.

Is philodendron toxic to dogs too?

Yes. The ASPCA lists philodendron as toxic to both cats and dogs. Dogs tend to chew more plant material than cats, so they can show more vomiting, but the mechanism and signs are the same.

My pet chewed a philodendron leaf — what now?

Rinse their mouth if they'll allow it, offer something cold to soothe the burning, and note how much they ate. Call your vet or ASPCA Poison Control at (888) 426-4435. Don't induce vomiting unless told to. Go in immediately for mouth swelling or breathing trouble.

What's a pet-safe alternative to philodendron?

For the trailing heartleaf look, spider plant or peperomia. For a larger statement plant, a parlor palm or areca palm — both non-toxic to cats and dogs per the ASPCA.

Related guides

• Pothos vs Philodendron: How to Tell Them Apart
• Is Monstera Toxic to Cats and Dogs?
• Cat-Safe Houseplants: 18 Picks Verified Against ASPCA
• How to Identify Toxic Plants for Dogs and Cats
• Are Succulents Safe for Cats? The Full Safe vs Toxic List