Is philodendron toxic to cats?
Heartleaf philodendron is toxic to cats (S2 Irritant): its insoluble calcium oxalate crystals cause oral pain, swelling, drooling, and vomiting, but ingestion is rarely life-threatening.
S2IRRITANT
- TOXINinsoluble calcium oxalates
- WHAT TO EXPECToral irritation; pain and swelling of mouth, tongue and lips; excessive drooling, gagging; vomiting
- CALL THE VETCall your vet if drooling or vomiting lasts more than a few hours or your cat refuses food or water — and immediately if you notice throat swelling or any breathing difficulty (rare, per Pet Poison Helpline).
S0S1S2S3S4
Symptoms
| SIGN |
|---|
| oral irritation; pain and swelling of mouth, tongue and lips |
| excessive drooling, gagging |
| vomiting |
| difficulty swallowing |
| in rare instances, severe throat swelling with breathing difficulty |
If your cat just ate it
1
Take the plant material away and move the vine out of reach — trailing stems are easy chew targets. Rinse your cat's mouth with water if tolerated and offer fresh water.
2
When to call the vet: Call your vet if drooling or vomiting lasts more than a few hours or your cat refuses food or water — and immediately if you notice throat swelling or any breathing difficulty (rare, per Pet Poison Helpline).
Safe swaps, graded S0
Graded S0 for cats. Same-shape matches are coming as the index grows.
Care at a glance
Lightmedium
Waterevery 7–10 days
Humiditymedium
Difficulty●○○