Philodendrons are not pet friendly. Every species in the philodendron family is toxic to both dogs and cats, according to the ASPCA’s poison control database. The plants contain microscopic needle-shaped crystals called calcium oxalate that cause immediate pain and irritation when chewed. Most cases resolve without lasting harm, but the symptoms can be distressing for your pet and, in rare situations, dangerous.
Why Philodendrons Are Toxic
The leaves, stems, and juices of philodendrons are packed with tiny calcium oxalate crystals. When a dog or cat chews on any part of the plant, these crystals act like microscopic shards of glass, stabbing into the soft tissues of the tongue, gums, and throat. The irritation is immediate, which is actually somewhat protective: most pets stop chewing quickly because it hurts.
This same mechanism applies to all philodendron varieties, including heartleaf, split-leaf, red emerald, red princess, and tree philodendron. Pothos and satin pothos, which look similar and are sometimes confused with philodendrons, contain the same type of crystals and are equally toxic.
Symptoms to Watch For
The first sign is usually pawing at the mouth or face. Because the crystals cause pain on contact, symptoms tend to appear within minutes of chewing. Common signs include:
- Drooling or excessive salivation
- Swelling of the tongue, lips, or throat
- Vomiting
- Difficulty swallowing
- Decreased appetite or refusal to eat
In most cases, the irritation stays localized to the mouth and throat. A pet that only took a small bite will typically experience discomfort that fades over several hours. More serious cases, where a pet has chewed and swallowed a larger amount, can involve inflammation throughout the digestive tract, causing ongoing vomiting and stomach pain. In rare and severe cases, swelling in the throat can interfere with breathing, and the Merck Veterinary Manual notes that kidney damage is a possible complication of significant ingestion.
What to Do if Your Pet Eats a Philodendron
Start by gently wiping or rinsing your pet’s mouth with cool water to help remove any remaining crystal residue. Don’t try to induce vomiting unless a veterinarian specifically tells you to. If you can see the plant your pet chewed on, note which one it was and roughly how much is missing.
For mild symptoms like brief drooling or a single episode of pawing at the mouth, monitoring at home is often sufficient. The discomfort typically resolves on its own. If your pet is vomiting repeatedly, refusing water, drooling heavily, or showing any signs of labored breathing, call your veterinarian or the ASPCA Poison Control hotline at (888) 426-4435. A consultation fee may apply for the hotline.
The good news is that most pets recover fully. Veterinary treatment for philodendron ingestion is supportive, focused on managing pain and swelling rather than counteracting a systemic poison. Pets that receive prompt care when symptoms are severe have strong outcomes.
Keeping Philodendrons in a Pet Household
If you already own philodendrons and aren’t ready to part with them, placement matters. Hanging planters and high shelves can work for homes with dogs, but cats are a different challenge entirely. Cats climb, and a trailing heartleaf philodendron dangling from a shelf is essentially an invitation to play. Cats are also more likely than dogs to nibble on leaves out of curiosity or boredom.
Dedicating a room that stays closed to pets is one option. Some owners place philodendrons in rooms with doors that latch, like a home office. But if your pet has unsupervised access to any area where the plant lives, there’s always some risk. Fallen leaves on the floor are easy to miss and easy for a curious pet to find.
Pet-Safe Alternatives
Several nontoxic houseplants offer a similar look to philodendrons without the danger. Peperomia varieties, including watermelon peperomia, have lush, rounded leaves and thrive in the same indirect light conditions philodendrons prefer. Boston ferns give you that full, trailing greenery. Spider plants are nearly indestructible and completely safe, though cats sometimes like to chew on the dangling offshoots. The lipstick plant is another trailing option with glossy leaves that fills a similar visual role to a heartleaf philodendron.
You can search the ASPCA’s full database of toxic and nontoxic plants by name to check any plant before bringing it home. It covers hundreds of common houseplants and is searchable by species for both cats and dogs.