Yes, monsteras are mildly toxic to dogs
Monstera contains insoluble calcium oxalate crystals. Chewing a leaf causes immediate burning in the mouth, so most pets stop quickly.
Monsteras and dogs: key facts
| Toxic to dogs? | Mildly toxic |
| Toxic to cats? | Mildly toxic |
| Scientific name | Monstera deliciosa |
| Also called | Swiss cheese plant, split-leaf philodendron |
| Toxic compound | Insoluble calcium oxalate crystals |
| Toxic parts | Leaves and stems (ripe fruit is edible for people) |
| Signs usually start | Immediate (within minutes of chewing) |
| Plant type | Houseplant |
Symptoms of monsteras poisoning in dogs
- Mouth pain and pawing at the face
- Drooling
- Vomiting
- Swelling of the lips and tongue
- Difficulty swallowing
Why monsteras are toxic to dogs
The plant cells contain bundles of needle-shaped calcium oxalate crystals (raphides). When a pet bites into the leaf, the crystals are ejected and embed in the mouth, tongue and throat, causing immediate burning pain, drooling and swelling. The crystals are not absorbed into the body, so organ damage is not expected.
What to do if your dog ate monsteras
- Remove plant pieces from your dog's mouth and move dogs away from the plant. Wipe sap or pollen off the fur and paws with a damp cloth.
- Call your vet or animal poison control for advice: ASPCA Animal Poison Control: (888) 426-4435 · Pet Poison Helpline: (855) 764-7661.
- Identify the plant. Take a photo or bring a piece (or the plant label) to the vet, and estimate how much was eaten and when.
- Do not make your dog vomit unless a vet tells you to. Home remedies such as hydrogen peroxide or salt can cause serious harm.
- Watch for mouth pain and pawing at the face, drooling, vomiting. Go to a vet if signs are severe, last more than a day, or your dog has trouble breathing or swallowing.
Treatment and outlook
Most cases need only supportive care. Gently rinse your pet's mouth with water and offer water to drink. A vet may give pain relief, anti-nausea medicine or an antihistamine for swelling. Go to a vet right away if you see swelling of the throat or any trouble breathing.
How to keep your dog away from monsteras
- Place monsteras on high shelves or in hanging planters out of reach of paws and tails, or in a room your dog cannot enter.
- Give your dog something better to chew: chew toys and puzzle feeders reduce boredom chewing.
- Pick up fallen leaves, petals and pollen promptly, and empty vases where pets can reach them.
Pet-safe alternatives to monsteras
If you love houseplants, these are listed as non-toxic to dogs by the ASPCA:
- OrchidsNon-toxic
- Spider PlantsNon-toxic
- Money TreesNon-toxic
- BambooNon-toxic
- CalatheasNon-toxic
- FernsNon-toxic
- Areca PalmsNon-toxic
- African VioletsNon-toxic
See the full list of plants safe for dogs.
Monsteras and dogs: FAQ
Are monsteras poisonous to dogs?
Monsteras are mildly toxic to dogs. Insoluble calcium oxalate crystals can cause mouth pain and pawing at the face and drooling, but serious poisoning is uncommon.
What part of monsteras is toxic to dogs?
Leaves and stems (ripe fruit is edible for people).
Can dogs die from eating monsteras?
It is very unlikely. Monsteras usually cause mild, short-lived signs. See a vet if signs are severe or your dog has trouble breathing or swallowing.
How long after eating monsteras will my dog show symptoms?
Immediate (within minutes of chewing).
Are monsteras toxic to cats too?
Yes, monsteras are mildly toxic to cats.
Other plants toxic to dogs
- Peace LiliesMildly toxic
- Calla LiliesMildly toxic
- TulipsMildly toxic
- HyacinthsMildly toxic
- CarnationsMildly toxic
- DaisiesMildly toxic
- ChrysanthemumsMildly toxic
- Baby's BreathMildly toxic
Sources
- ASPCA Animal Poison Control: Toxic and Non-Toxic Plants for Dogs
- Merck Veterinary Manual: Poisonous Plants
Toxicity ratings follow the ASPCA Animal Poison Control Center plant lists. Severity depends on the amount eaten, the part of the plant and your dog's size and health. When in doubt, call your vet.