Safety verdict
Consulted references classify the plant as toxic or irritating for that pet type.
Pet ingestion lookup
My dog ate Heartleaf Philodendron - what should I do?
Philodendron hederaceum
Potentially toxic
Contact your veterinarian or an animal poison-control resource now, especially if any amount was chewed or swallowed.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Signs to watch for
Oral irritation, intense burning and irritation of mouth, tongue and lips, excessive drooling, vomiting, and difficulty swallowing.
Escalation note
The plant causes localized irritation upon contact with the mouth and digestive tract. Please contact your veterinarian if you suspect your dog has ingested any part of this plant.
What to watch for
Pawing at the mouth, head shaking, foamy drooling, and lip-licking are most common, followed by oral or tongue swelling, vomiting, and decreased appetite. Marked swelling that interferes with breathing is rare but possible.
Time window
ASPCA does not publish exact timing; signs typically appear within minutes of chewing and most dogs recover within 24 hours with supportive care.
When to call the vet
Call your vet or ASPCA Poison Control (888-426-4435) if you see visible swelling around the mouth, persistent drooling, repeated vomiting, or any change in breathing.
What this means for your dog
Dogs that mouth a heartleaf philodendron get an immediate burn from insoluble calcium oxalate crystals — the discomfort is what usually keeps the dog from eating more than a bite or two. Most cases are painful but mild and resolve within a day.
Sources: ASPCA (no first-aid guidance).
Source references
Poison-control resources
This page summarizes source-bound plant-safety information and is not veterinary advice.