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Is Dumbcane toxic to cats?

YES (TOXIC)
Unfortunately, Dumbcane 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:Charming Dieffenbachia, Giant Dumb Cane, Tropic Snow, Exotica, Spotted Dumb Cane, Exotica Perfection, Dieffenbachia
Scientific Name:Dieffenbachia
Family:Araceae
Toxic Principles:Insoluble calcium oxalates, proteolytic enzyme
Clinical Signs:Oral irritation, intense burning and irritation of mouth , tongue and lips, excessive drooling, vomiting, difficulty swallowing.
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 Dumbcane Toxic to Cats?

Houseplants are beautiful and provide numerous benefits to your indoor environment. However, the problem is that not all houseplants are safe for your pets. For cat lovers, it's crucial to know which plants are non-toxic and which ones are harmful. One common indoor houseplant that cat owners need to be wary of is dumbcane.

The dumbcane plant (Dieffenbachia spp.) is popular due to its attractive foliage and ease of care. It also comes in several varieties, making it appealing to plant enthusiasts. However, it's essential to know that this plant can be dangerous to your beloved feline friend.

What is Dumbcane?

Dumbcane is a tropical houseplant native to Central and South America. It belongs to the Araceae family, which includes other well-known ornamental plants like peace lilies and philodendrons. The plant is known for its large and glossy leaves, which come in various shades of green with white or yellow stripes.

The plant's name, "dumbcane," comes from the fact that its toxic sap contains oxalate crystals that cause temporary loss of speech and swollen tongue if ingested. Hence, people avoid eating dumbcane to avoid being 'dumb.'

What Makes Dumbcane Toxic to Cats?

Dumbcane's sap contains a toxic substance called calcium oxalate, a crystalline compound that can cause a range of symptoms in cats, such as:

  • Difficulty breathing or swallowing
  • Vomiting
  • Oral irritation
  • Inflammation or swelling of the tongue and mouth
  • Excessive drooling and foaming at the mouth
  • Loss of appetite
  • Nausea

When a cat ingests dumbcane, the calcium oxalate crystals will cause immediate swelling and inflammation of the mouth, throat, and tongue. This reaction can be quite severe, leading to difficulty breathing, which can be life-threatening if not treated quickly.

How Much Dumbcane is Toxic to Cats?

The toxicity of dumbcane to cats depends on the amount ingested. In most cases, a cat that has ingested a small amount of dumbcane will experience mild symptoms like drooling and oral inflammation.

However, if a cat ingests a large amount of dumbcane, it can cause severe symptoms and even death. A lethal dose of dumbcane for cats is estimated to be 0.3 grams of plant material per kilogram of a cat's body weight. This means that a cat weighing 5 kg would only need to ingest 1.5 grams of dumbcane plant material to suffer from severe symptoms or death.

What Should You Do If Your Cat Ingests Dumbcane?

If you suspect your cat has eaten dumbcane, seek veterinary care immediately. Your veterinarian may induce vomiting to remove the plant from your cat's stomach. Treatment will also involve providing supportive care, such as administering intravenous fluids to prevent dehydration, and monitoring your cat's breathing and heart rate.

In severe cases, your cat may need to undergo an emergency tracheotomy (a surgical procedure that provides access to the airway) to prevent suffocation. Therefore, it's essential to act quickly to avoid any life-threatening complications.

How to Prevent Your Cat from Eating Dumbcane?

The best way to prevent your cat from ingesting dumbcane is to keep the plant out of reach. Here are some tips to keep your cat safe:

  • Keep your plants in a separate room or behind closed doors.
  • Place your plants on high shelves or window sills that your cat cannot reach.
  • Use hanging baskets to keep your plants out of your cat's reach.
  • Spray your plants with a bitter-tasting solution to deter your cat from nibbling on them.
  • Monitor your cat's behavior and discourage them from chewing on any houseplants.

Conclusion:

Dumbcane may be a beautiful plant, but it's not worth risking your cat's health. Cats are curious creatures that love to explore their surroundings, so it's essential to keep all toxic houseplants out of their reach. If you have dumbcane in your home, take extra precautions to ensure that your cat cannot access it. If you suspect that your cat has ingested dumbcane, contact your veterinarian immediately for prompt treatment.

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