
The Swiss cheese plant, also known as the Mexican breadfruit, hurricane plant, or cutleaf philodendron, is a trendy decorative plant in homes and gardens. However, it contains insoluble calcium oxalate crystals, which are toxic to cats and can cause intense burning and irritation in the mouth, tongue, and lips, leading to excessive drooling, vomiting, and difficulty swallowing. While Swiss cheese plant poisoning is rarely fatal, it can cause a cat's airways to swell up, resulting in severe pain and requiring immediate veterinary attention. Therefore, it is crucial to keep this plant out of the reach of cats and to seek veterinary care if any symptoms of poisoning occur.
| Characteristics | Values |
|---|---|
| Common Name | Swiss Cheese Plant |
| Scientific Name | Monstera Deliciosa |
| Family | Araceae |
| Toxicity | Toxic to Cats |
| Toxic Principles | Insoluble Calcium Oxalates |
| Clinical Signs | Oral irritation, intense burning and irritation of mouth, tongue and lips, excessive drooling, vomiting, difficulty swallowing, swelling of airways |
| Treatment | Contact your local veterinarian as soon as possible |
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What You'll Learn
- Swiss cheese plants contain insoluble calcium oxalate crystals
- Poisoning from the plant rarely causes death but can be serious
- Symptoms include oral irritation, excessive drooling, and vomiting
- If you suspect poisoning, contact your veterinarian immediately
- The plant is also known as the Mexican breadfruit or hurricane plant

Swiss cheese plants contain insoluble calcium oxalate crystals
The Swiss cheese plant, also known as the Mexican breadfruit, hurricane plant, or cutleaf philodendron, is toxic to cats due to the presence of insoluble calcium oxalate crystals. These crystals are an essential component of the plant's defensive mechanism against grazing animals. When ingested, the crystals are immediately released into the mouth, causing intense burning and irritation. The crystals penetrate the tissues in the mouth, leading to oral irritation and excessive drooling. In some cases, the cat's airways may swell, causing difficulty in swallowing.
Insoluble calcium oxalate crystals are found in many plants, including the Swiss cheese plant. These crystals are heat-resistant and cannot be dissolved in water, making it challenging to remove them from toxic plants through washing or cooking. The shape of the crystals plays a role in their irritating effects, with needle-shaped crystals considered the most irritating. The crystals in the Swiss cheese plant are believed to be needle-shaped, contributing to their toxic nature.
Upon ingestion, the crystals cause instantaneous pain and swelling in the mouth, which usually deters further consumption of the plant. While Swiss cheese plant poisoning in cats is rarely fatal, it can cause significant discomfort and pain. The severity of symptoms may vary among different plants containing insoluble calcium oxalate crystals.
If you suspect your cat has ingested any part of a Swiss cheese plant, it is important to seek veterinary assistance immediately. The vet will examine the cat's mouth for crystals lodged in the tissue and provide appropriate treatment to alleviate discomfort. Removing the plant from the cat's reach and keeping the cat indoors can help prevent further exposure.
It is worth noting that all parts of the Swiss cheese plant, including the leaves, roots, stems, and flowers, are considered mildly toxic due to the presence of these crystals. The only exception is the fruit, which is edible for humans when ripe. Therefore, it is crucial to keep this plant out of the reach of cats and other pets to ensure their safety.
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Poisoning from the plant rarely causes death but can be serious
The Swiss cheese plant, also known as the Mexican breadfruit, hurricane plant, or cutleaf philodendron, is toxic to cats. Poisoning from the plant rarely causes death but can be serious. The plant contains insoluble calcium oxalate crystals, which are released into the cat's mouth during chewing and cause intense burning and irritation. This can lead to excessive drooling, oral swelling, vomiting, and even difficulty swallowing. In some cases, it can also cause the cat's airways to swell up, leading to difficulty breathing.
If you suspect your cat has chewed on or consumed any part of the Swiss cheese plant, it is important to act quickly. Take your cat to a veterinarian as soon as possible and bring a sample or picture of the plant, if possible. Removing the plant from your home or garden is also crucial to prevent further exposure.
While poisoning from the Swiss cheese plant rarely leads to death, it can still cause significant pain and discomfort for your cat. The toxicity of the plant can result in a range of symptoms, including oral irritation, ulcers in the gums and lips, and pawing at the mouth due to irritation. These symptoms can be distressing for both the cat and the owner.
In addition to the immediate health concerns, it is important to consider the potential financial implications of Swiss cheese plant poisoning. Veterinary care can be expensive, and the cost of treatment for poisoning may vary depending on the severity of the case. It is always better to be safe than sorry when it comes to the health of your beloved cat.
To prevent Swiss cheese plant poisoning, cat owners should be cautious about having this plant in their homes or gardens. Keeping the plant out of reach or choosing pet-safe alternatives can help reduce the risk of accidental ingestion. It is also crucial to supervise cats when they are around houseplants and to seek veterinary advice if you have any concerns about potential toxicity.

Symptoms include oral irritation, excessive drooling, and vomiting
The Swiss cheese plant, also known as Monstera deliciosa, contains insoluble calcium oxalate crystals, which are toxic to cats. These crystals are released into the mouth when a cat chews on the plant, causing oral irritation, intense burning, and irritation of the mouth, tongue, and lips. This can lead to excessive drooling, pawing at the mouth, and even ulcers in the gums and lips. If the crystals are swallowed, they can cause vomiting.
Symptoms of Swiss cheese plant poisoning typically begin immediately after a cat chews on or consumes any part of the plant. The entire plant is toxic, from the root to the stem to the leaf. The severity of the symptoms will depend on the amount consumed. Small nibbles are unlikely to cause major health problems, but larger amounts can lead to serious health issues.
If you suspect your cat has ingested any part of a Swiss cheese plant, remove the plant from your home or garden immediately and contact your veterinarian as soon as possible. It may be helpful to bring a sample of the plant or your cat's vomit to the veterinarian to aid in diagnosis.
It is important to keep in mind that some plants are highly toxic to cats and should not be brought into a home with cats. Lilies, for example, can cause organ failure in cats and should be avoided. If in doubt about a plant's toxicity, it is always best to research it before bringing it into your home and keep it out of your cat's reach.
In addition to lilies and the Swiss cheese plant, other plants that are toxic to cats include aloe vera, sago palm, tulips, tomato plants, and peace lilies. Some common symptoms of plant toxicity in cats include oral irritation, excessive drooling, vomiting, diarrhoea, abdominal pain, and difficulty breathing. If you notice any of these symptoms in your cat, seek veterinary care immediately.
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If you suspect poisoning, contact your veterinarian immediately
The Swiss cheese plant, also known as the Mexican breadfruit, hurricane plant, or cutleaf philodendron, is toxic to cats. If you suspect your cat has ingested any part of this plant, contact your veterinarian immediately.
Swiss cheese plant poisoning is rarely fatal, but it is still a serious condition. The plant contains insoluble calcium oxalate crystals, which are released into the mouth during chewing and cause intense burning and irritation. The crystals penetrate the tissues in the mouth, causing dramatic oral irritation. Symptoms include excessive drooling, pawing at the mouth, ulcers in the gums and lips, and vomiting. In some cases, the cat's airways may swell up, causing breathing difficulties.
If you suspect your cat has ingested any part of the Swiss cheese plant, contact your veterinarian immediately. While you are on your way to the vet, try to get a picture or sample of the plant to help the veterinarian make a quick diagnosis. If you did not witness your cat eating the plant, bring a sample of their vomit to the vet so they can identify any regurgitated plant material.
The vet will rely heavily on the information you provide and the results of a physical examination. They will likely examine your cat's mouth to identify any crystals lodged in the tissue. However, it is important to note that there is no test to confirm Swiss cheese plant poisoning, and many plants contain calcium oxalate crystals. The vet may not be able to tell you definitively that the Swiss cheese plant caused your cat's condition, but they can determine if the cause was a plant containing this toxin.
If you know which plant caused the poisoning, remove it from your home or garden immediately. If you are unsure how your cat was exposed, keep them indoors as much as possible to prevent further exposure.

The plant is also known as the Mexican breadfruit or hurricane plant
The Swiss cheese plant, also known as the Mexican breadfruit, hurricane plant, or cutleaf philodendron, is often used as a decorative plant in homes and gardens. The plant is native to the tropical forests of southern Mexico, south to Panama, and has been introduced to many tropical areas. It is characterised by its large leaves with holes, which resemble Swiss cheese, and can grow up to 60-70 feet tall in the wild, though they are usually kept between 6 to 8 feet in home environments.
The Swiss cheese plant is toxic to cats due to the presence of insoluble calcium oxalate crystals. If a cat chews on or consumes any part of the plant, these crystals are released into the cat's mouth, penetrating the tissues and causing intense burning and irritation. Common symptoms of Swiss cheese plant poisoning include oral irritation, excessive drooling, vomiting, and difficulty swallowing. In some cases, the cat's airways may swell, causing respiratory distress. While Swiss cheese plant poisoning is rarely fatal, it can cause significant pain and discomfort for affected cats.
The Mexican breadfruit is a popular houseplant due to its stunningly beautiful leaves and tolerance for indoor light conditions. However, pet owners should be cautious of keeping this plant in their homes if they have cats, as ingestion of any part of the plant can be toxic and cause serious health issues. If you suspect your cat has ingested any part of a Swiss cheese plant, it is important to seek veterinary attention immediately and remove the plant from your home or garden to prevent further exposure.
The scientific name of the Swiss cheese plant is Monstera deliciosa, which refers to the delicious, edible fruit produced by the plant. The fruit can be up to 10 inches long and has a strong, sweet scent that has been compared to a combination of pineapples and bananas. While the fruit is safe for humans to consume, the leaves and other parts of the plant can be highly toxic to cats and other small animals. Therefore, it is crucial for cat owners to be aware of the potential dangers of having a Swiss cheese plant in their home and to take the necessary precautions to ensure the safety of their feline companions.
Frequently asked questions
Yes, the Swiss cheese plant, also known as Monstera deliciosa, is toxic to cats.
If your cat eats the Swiss cheese plant, they may experience oral irritation, intense burning and irritation of the mouth, tongue and lips, excessive drooling, vomiting, difficulty swallowing, and in some cases, difficulty breathing.
If you think your cat has eaten the Swiss cheese plant, you should take them to a veterinarian as soon as possible. If you can, bring a sample or picture of the plant, or a sample of your cat's vomit, to help the vet make a quick diagnosis.
The Swiss cheese plant is also known as Mexican breadfruit, hurricane plant, or cutleaf philodendron.
Other plants that are toxic to cats include lilies, aloe vera, sago palm, tulips, tomato plants, and snake plants.

























