PupkeeperToxic
Is monstera (Swiss cheese plant) toxic to dogs? Yes: toxic but rarely serious
Toxic but rarely serious. Chewing monstera releases crystals that irritate the mouth, causing drooling, pawing at the mouth and vomiting.
If your dog ate or touched this, call your vet or a pet poison line now
United States
Poison lines in other countries: United Kingdom, Canada, Australia, New Zealand, Belgium, France, JM, PR, Singapore, Switzerland, TT, VI
Monstera (Swiss cheese plant) and dogs: key facts
- Verdict
- Toxic · Call your vet or a poison line
- What it can do
- Pawing at the mouth or head shaking, burning, irritated mouth, tongue and lips, heavy drooling, vomiting and trouble swallowing. All 6
- What to do now
- Call your vet or a pet poison line now. All steps
- Sources
- ASPCA Animal Poison Control, ASPCA, Pet Poison Helpline. Reviewed 9 October 2026.
What should I do if my dog ate monstera (Swiss cheese plant)?
- Call your vet or a pet poison line now.
- Take the plant away and rinse your dog's mouth with water.
- Go to a vet hospital right away if your dog has trouble swallowing or breathing.
Don't
- Don't make your dog vomit unless a vet tells you to.
- Don't give milk, oil, salt or other home remedies unless a vet tells you to.
Symptoms to watch for
- Pawing at the mouth or head shaking
- Burning, irritated mouth, tongue and lips
- Heavy drooling
- Vomiting
- Trouble swallowing
- Loss of appetite
Why
Monstera contains insoluble calcium oxalate crystals that are released when chewed. Many cases can be handled at home with advice, and lasting harm is not expected.
Sources
- ASPCA Animal Poison Control: Swiss Cheese Plant
- ASPCA: These Houseplants Can Cause Trouble for Your Pets
- Pet Poison Helpline: Toxic Plants to Pets (first aid)
Guide reviewed 9 October 2026. Page updated 7 November 2026.
General information from the sources above, not a diagnosis. When in doubt, call your vet.