Cats
Potentially toxicConsulted references classify the plant as toxic or irritating for that pet type.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Sources

Colocasia esculenta
Colocasia esculenta is a tropical perennial known for its large, heart-shaped leaves that resemble elephant ears. It contains insoluble calcium oxalate crystals that cause irritation upon contact with tissues.
Safety status
Cats
Potentially toxicConsulted references classify the plant as toxic or irritating for that pet type.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Sources
Cats that bite into elephant ears immediately encounter insoluble calcium oxalate crystals — the same family of irritant found in dieffenbachia and philodendron. The reaction is sharp and fast, and most cats spit the plant out before swallowing much. Even so, the oral pain and drooling that follow are real, and rare upper-airway swelling makes any chewing worth a call.
Foamy drooling and head-shaking. Pawing at the mouth. Vocalizing, refusing food, or hiding. Vomiting (less common in cats than dogs, but possible). Rare but serious: swelling of the tongue or upper airway that affects breathing.
Mouth symptoms usually appear within minutes of chewing. Most cats are back to normal within 12–24 hours; rare airway swelling can develop later in the first few hours, so don't dismiss a 'better' cat too early.
Call your vet or ASPCA Poison Control at (888) 426-4435 immediately. Treat any swelling, breathing difficulty, or non-stop retching as a true emergency and head to the ER.
Remove plant material from your cat's mouth. A small amount of xylitol-free milk, yogurt, or vanilla ice cream can soothe oral irritation (ASPCA guidance for insoluble-oxalate plants). Don't induce vomiting at home. Call ASPCA Poison Control at (888) 426-4435 or your veterinarian.
Sources: ASPCA, Pet Poison Helpline.
If a pet has chewed or swallowed plant material and is showing symptoms, contact a veterinarian or poison resource immediately. This product is for structured reference, not diagnosis.
Cats — concern notes
Common signs
Oral irritation, intense burning and irritation of the mouth, tongue and lips, excessive drooling, vomiting, and difficulty swallowing.
Escalation note
The presence of insoluble calcium oxalate crystals causes immediate mechanical irritation. If your cat has ingested this plant, please contact your veterinarian or a pet poison control center immediately.
Safer alternatives
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ASPCA Toxic Plant List
toxicology · 99% reliability
Elephant Ear is toxic to both cats and dogs due to the presence of insoluble calcium oxalate crystals.
NC State Extension Plant Toolbox
botanical · 94% reliability
Colocasia esculenta is a tuberous, frost-tender perennial that is widely grown for its large, tropical-looking foliage.
Same cat verdict

Monstera deliciosa is a popular tropical houseplant known for its large, fenestrated leaves and vining growth habit. It contains insoluble calcium oxalate crystals that can cause irritation if ingested by pets.
Potentially toxic for cats & dogs.

Dracaena trifasciata is a popular, hardy houseplant known for its stiff, sword-like leaves with striking yellow margins. It is widely appreciated for its air-purifying qualities and ability to thrive in various indoor conditions.
Potentially toxic for cats & dogs.

Philodendrons are popular tropical foliage plants known for their lush, heart-shaped or split leaves. They contain insoluble calcium oxalate crystals that can cause irritation if ingested.
Potentially toxic for cats & dogs.

The Mauna Loa Peace Lily is a popular indoor plant known for its elegant white spathes and lush foliage. It contains insoluble calcium oxalate crystals that can cause irritation upon contact or ingestion.
Potentially toxic for cats & dogs.