Is Monstera Toxic to Dogs? (Swiss Cheese Plant & Your Pup)

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Monstera (aka Swiss cheese plant) is the it-plant — huge, sculptural, all over your feed. But if you’ve got a dog, especially a chewy puppy, there’s a catch: it’s toxic. Here’s exactly what monstera does to dogs, what to watch for, and what to grow instead for the same jungle vibe.

Is monstera toxic to dogs?

Yes. The ASPCA lists the monstera (Swiss cheese plant) as toxic to dogs and cats. It’s classified as mildly toxic — rarely life-threatening — but it can cause real, painful mouth and stomach irritation, so it’s one to keep away from a curious pup.

Why it’s toxic

Monstera leaves and stems are loaded with insoluble calcium oxalate crystals — microscopic and needle-shaped. When your dog bites a leaf, the crystals are released and embed in the soft tissues of the mouth and throat, causing immediate burning and irritation. It’s a mechanical injury, not a slow chemical poison, which is why symptoms show up fast. Same toxin as pothos, philodendron, and peace lily.

Symptoms in dogs

• Pawing at the mouth or face
• Excessive drooling
• Oral pain — reluctance to eat
• Vomiting
• Difficulty swallowing

Most dogs recover with supportive care once the plant is out of reach. Rarely, significant swelling of the mouth or airway occurs — that’s an emergency.

What to do if your dog chews it

1. Remove the plant and any chewed bits; wipe out the mouth if you can.
2. Offer fresh water (a little cold, plain yogurt can soothe the burning).
3. Don’t induce vomiting unless a professional tells you to.
4. Note how much was eaten and when, then call your vet or the ASPCA Animal Poison Control Center at (888) 426-4435. Any breathing trouble or heavy swelling = go now.

More: how to tell if your dog was poisoned.

The pet-safe swap

You wanted the big, leafy tropical statement — get it from a parlor palm instead. It’s ASPCA non-toxic, thrives in low light, and gives that same jungle-corner energy without the vet risk.

Pet-safe swap

Live Parlor Palm (Chamaedorea elegans)

Big-leaf tropical vibes without the toxicity — ASPCA non-toxic to dogs and cats, and happy at floor level even in low light. Full care guide.

Check price on Amazon →

FAQ

Will monstera kill my dog?
Very unlikely — it’s mildly toxic and rarely fatal. But it causes painful mouth and stomach irritation, so keep it out of reach and call your vet if symptoms are strong.

How much monstera is dangerous?
Even a small bite causes immediate mouth irritation because the crystals act on contact. Larger amounts mean more vomiting and swallowing trouble.

Is the monstera fruit toxic to dogs?
Unripe monstera fruit also contains calcium oxalates and can irritate the mouth. Keep it away from pets.

Is monstera worse for cats or dogs?
Similar risk — same toxin. Cats are a bit more sensitive. See is monstera toxic to cats and dogs?

The bottom line

Monstera is toxic to dogs thanks to insoluble calcium oxalate crystals that burn the mouth and gut. It’s rarely deadly but genuinely painful — place it far out of reach, or swap it for a pet-safe parlor palm and keep the jungle vibe, worry-free.

More: houseplants poisonous to dogs and is pothos toxic to dogs?

Sources

• ASPCA — Monstera / Swiss Cheese Plant (toxic to dogs and cats)
• ASPCA — Parlor Palm (non-toxic, safe swap)

Written by Mo Ruman, a self-taught plant parent who cross-checks every plant against the ASPCA database. Not a vet — when in doubt, call yours. More about Kijani Paws · Ask me about a plant. As an Amazon Associate, Kijani Paws earns from qualifying purchases; this never affects our safety info.