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Is Yaupon Holly Toxic to Dogs?

⚠️ Mildly ToxicSeverity: Mild
✅ Cross-checked against veterinary poison-control guidance · Oct 2026 audit
⚠️ Educational info only. If your pet just chewed something and looks unwell, skip the reading and call your vet or Pet Poison Helpline (US): (855) 764-7661.
Yaupon holly is mildly toxic to dogs. Berries cause vomiting and diarrhea, and the spiny leaves can scratch the mouth on the way down.

Also known as: Yaupon, Cassina, Ilex vomitoria · Ilex vomitoria

What makes it toxic

Saponins and methylxanthines (caffeine-related compounds) in leaves and berries, with the berries carrying the highest load.

Warning signs to watch for

Drooling, vomiting, diarrhea and lip-smacking within hours; spiny leaf fragments can add visible mouth discomfort.

What to do if your dog eats it

Remove material, offer water and count how many berries were likely eaten. Call your vet if vomiting is repeated — a big berry meal in a small dog deserves the call.

Common questions

How many yaupon berries are dangerous for a dog?

A few usually mean drooling and a vomit. A handful in a small dog is a vet call, because the saponin and methylxanthine load adds up.

Is yaupon holly worse than American holly or English holly?

They are all in the same mildly-toxic family of risks — GI upset plus mouth scratches. No holly is a good chew toy.

More plants checked for dogs

Pothos☠️ ToxicYes, pothos is toxic to dogs. Chewing any part of the vine releases calcium oxalate crystals thaAloe Vera⚠️ Mildly ToxicAloe vera is mildly to moderately toxic to dogs. The skin and latex layer of the leaf contain coSpider Plant✅ Non-ToxicNo, spider plants are non-toxic to dogs. A dog that nibbles the arching leaves is not at risk ofEaster Lily⚠️ Mildly ToxicEaster lilies are only mildly toxic to dogs — they usually cause stomach upset, not the fatal kiSago Palm☠️ ToxicYes — sago palm is severely toxic to dogs, with a documented fatality rate around 50% when untreBoston Fern✅ Non-ToxicNo, Boston ferns are non-toxic to dogs. Chewing a frond will not poison your dog.

This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate something concerning, contact your veterinarian or a pet poison hotline right away. Checking what your pet can eat? Visit our sister site SafeOrToxic.