Is American Holly Toxic to Dogs and Cats? (2026)

The spiny leaves often cause more mechanical mouth irritation than the mild toxin itself; berries are the more commonly ingested part. Usually resolves with monitoring.

The toxic component in American Holly is saponins and methylxanthines.

American Holly's spiny leaf margins often cause more immediate mechanical mouth irritation than the mild saponin toxicity itself — a dog that mouths a holly branch is more likely to yelp from the sharp leaves than to show signs of the toxin.

Scientific name

Ilex opaca

Family

Aquifoliaceae

Also known as

American Holly, English Holly, European Holly, Oregon Holly, Inkberry, Winterberry

Typically found

outdoor