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Is Inkberry toxic to cats?

YES (TOXIC)
Unfortunately, Inkberry is toxic and potentially harmful to cats. We recommend you keep your feline friends away from this plant. See the table below for more information.
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Additional Names:English Holly, European Holly, Oregon Holly, American Holly, Winterberry
Scientific Name:Ilex opaca
Family:Aquifoliaceae
Toxic Principles:saponins
Clinical Signs:Vomiting, diarrhea and depression. Leaves and berries are low toxicity.
If you think your cat may have ingested a poisonous substance, call 888 426 4435 or your local vet
Detailed Write-up
Author:
Alec
Last Updated:
7/13/25

Is Inkberry Toxic to Cats?

Cats are curious creatures, and they love to explore their surroundings. They will sniff, lick, and chew on anything that attracts their attention, including houseplants. However, some plants can be dangerous to our feline friends. One such plant is Inkberry (Ilex glabra). In this article, we will discuss whether Inkberry is toxic to cats or not.

What is Inkberry?

Inkberry is an evergreen shrub native to the eastern United States. It grows up to six feet tall and produces dark green, glossy leaves. The plant blooms white or greenish-white flowers in the spring and summer, followed by black berries in the fall. These berries are not edible for humans, but birds and other wildlife consume them with relish.

Is Inkberry toxic to cats?

Unfortunately, Inkberry is toxic to cats. The plant contains a chemical called saponin, which is poisonous to cats and other animals. Saponin is a natural detergent that can cause vomiting, diarrhea, and even seizures if ingested in large quantities.

Cats who ingest Inkberry leaves, berries, or stems may experience gastrointestinal upset, including vomiting, diarrhea, and abdominal pain. They may also display neurological symptoms, such as seizures, tremors, and loss of coordination. In severe cases, Inkberry poisoning can be fatal, especially if the cat does not receive prompt medical attention.

What are the symptoms of Inkberry poisoning in cats?

If your cat has ingested Inkberry, you may notice the following symptoms:

  • Vomiting
  • Diarrhea
  • Abdominal pain
  • Loss of appetite
  • Dehydration
  • Increased thirst
  • Weakness
  • Tremors
  • Seizures

If you suspect that your cat has ingested Inkberry or is exhibiting any of these symptoms, it is essential to take them to the veterinarian immediately. The vet may perform tests to determine the severity of the poisoning and prescribe appropriate treatment. Treatment may include inducing vomiting, administering activated charcoal to absorb the toxins, and providing supportive care, such as fluid therapy and anti-seizure medication.

How can I prevent Inkberry poisoning in my cat?

The best way to prevent Inkberry poisoning in your cat is to keep the plant out of their reach. Place the plant in an area that your cat cannot access, such as a high shelf or another room. If you have outdoor cats, do not plant Inkberry in your garden or yard.

If you have Inkberry in your house or yard and are concerned that your cat may ingest it, monitor your cat closely whenever they are in the vicinity of the plant. If you notice any signs of ingestion, such as leaves or berries missing from the plant, remove your cat from the area immediately and contact your veterinarian.

Conclusion

Inkberry is a beautiful and popular plant, but it can be lethal to cats if ingested. The plant contains saponin, a toxic chemical that can cause gastrointestinal and neurological symptoms in cats. If you suspect that your cat has ingested Inkberry or is exhibiting any of the symptoms mentioned in this article, take them to the vet immediately. The best way to prevent Inkberry poisoning in cats is to keep the plant out of their reach or not have the plant in your home or garden at all. As cat owners, it is our responsibility to create a safe and healthy environment for our furry friends.

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