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Is Climbing Bittersweet toxic to cats?

YES (TOXIC)
Unfortunately, Climbing Bittersweet 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:Bittersweet, Waxwork, Shrubby Bittersweet, False Bittersweet, Climbing Bittersweet, American Bittersweet
Scientific Name:Celastrus scandens
Family:Celastraceae
Toxic Principles:May contain euonymin and sesquiterpene alkaloids
Clinical Signs:weakness, convulsions, gastroenteritis (vomiting, diarrhea)
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 Climbing Bittersweet Toxic to Cats?

Cats are curious creatures that love to explore their surroundings, climb trees, and play in gardens. As much as we love our furry friends and encourage them to be active, certain plants can pose a hazard to their health. Climbing bittersweet is one such plant that has been debated by pet owners and veterinarians. In this article, we will explore the facts about climbing bittersweet and its effect on cats.

What is Climbing Bittersweet?

Climbing bittersweet, scientifically known as Celastrus scandens, is a deciduous vine that belongs to the family Celastraceae. It is a native plant to North America that thrives in woodlands, along the borders of forests, and in disturbed habitats. The plant's leaves are oval-shaped, glossy, and finely toothed, while the flowers are small and greenish-yellow. The fruit of the bittersweet plant is round, 1/2-inch long, and orange-yellow when ripe, enclosed in a yellowish-red capsule that opens to reveal bright red seeds.

The Toxicity of Climbing Bittersweet for Cats

Climbing bittersweet contains a compound called celastrine, which can be toxic to cats if ingested in high quantities. It is important to understand that not all cats will be affected by the plant to the same degree. Some cats may show symptoms of toxicity after consuming bittersweet in small amounts, while others may not show any symptoms at all.

Symptoms of Climbing Bittersweet Toxicity in Cats

The symptoms of climbing bittersweet toxicity in cats depend on the quantity of the plant ingested and the severity of the poisoning. Some of the typical symptoms include:

  • Vomiting and diarrhea
  • Loss of appetite
  • Abdominal pain and cramps
  • Dehydration
  • Tremors
  • Difficulty breathing
  • Uncoordinated movements
  • Seizures

If you notice any of these symptoms in your cat after they have been exposed to climbing bittersweet, contact your veterinarian immediately.

Treatment of Climbing Bittersweet Toxicity in Cats

If your cat has ingested climbing bittersweet, the first thing to do is to remove the plant from their reach and assess the severity of their symptoms. If the symptoms are mild, your veterinarian may advise you to monitor your cat closely and provide supportive care such as fluids, electrolytes, and antiemetic medications. If the symptoms are severe, your cat may need hospitalization, intravenous fluids, oxygen therapy, and intensive care.

Prevention is the Best Medicine

Preventing your cat from consuming climbing bittersweet is the best way to keep them safe from toxicity. Here are some tips to help you keep your curious cat away from the poisonous plant:

  • Avoid planting climbing bittersweet near areas where your cat likes to play or rest.
  • Train your cat to avoid plants by using verbal cues and positive reinforcement.
  • Keep your cat indoors or supervise them while they are outdoors.
  • If you have a garden with plants that are toxic to cats, make sure they are fenced off.
  • If you suspect that your cat has ingested a poisonous plant, contact your veterinarian immediately.

Conclusion

Climbing bittersweet may be a beautiful plant, but it is hazardous to cats. Though not fatal, the symptoms of bittersweet toxicity can cause serious health problems for your feline companion. As a responsible pet owner, it is essential to be aware of the plants in your home and surroundings that can harm your furry friends and take the necessary steps to protect them. Prevention is the best medicine for keeping your cat happy, healthy and safe.

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