American Holly

Also known as: English Holly, European Holly, Oregon Holly, Inkberry, Winterberry

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Clinical Signs: Vomiting (not in horses), diarrhea and depression.
Family: Aquifoliaceae
Scientific Name: Ilex opaca
Toxic Principles: saponins

Source: ASPCA Toxic and Non-Toxic Plants list (dogs), scraped 2026-07-14 from https://www.aspca.org/pet-care/animal-poison-control/dogs-plant-list · view original