Is Philodendron Poisonous to Dogs?

The toxic compound in philodendron:

• Insoluble calcium oxalates

If your dog ate philodendron, watch for:

• •Oral irritation
• •Pain and swelling of the mouth, tongue and lips
• •Excessive drooling
• •Vomiting
• •Difficulty swallowing

Is Philodendron poisonous to dogs?

Yes. The ASPCA lists Philodendron as toxic to dogs. All parts of the plant contain insoluble calcium oxalate crystals, which release sharp, needle-like raphides when a dog bites or chews the leaves, stems or roots. This causes immediate irritation and inflammation of the mouth and throat.

What happens if my dog chews on a Philodendron leaf?

Chewing typically triggers intense oral pain, drooling, pawing at the mouth, swelling of the lips, tongue and mouth, vomiting, and difficulty swallowing. Most cases are uncomfortable but not life-threatening; however, severe swelling of the airway is a rare emergency. Contact your veterinarian or the ASPCA Animal Poison Control Center at (888) 426-4435 if ingestion is suspected.

Which Philodendron varieties are dangerous to dogs?

All of them. The ASPCA lists many varieties as toxic, including Heartleaf, Split Leaf, Tree, Cutleaf, Horsehead, Lacy Tree and Variegated Philodendron. They share the same toxic principle (insoluble calcium oxalates), so no Philodendron variety should be considered safe around dogs.

• ASPCA - Heartleaf Philodendron

Last updated 2026-06-25