
The Swiss cheese plant, also known as Monstera deliciosa, is a tropical plant native to the rainforests of Central America. It is commonly grown as a houseplant and is known for its distinctive holes or eyes on its broad, green leaves, resembling the holes in Swiss cheese. While the Swiss cheese plant is admired for its unique appearance, it is important to be aware of its potential toxicity. All parts of the plant, except the ripe fruits, are considered toxic, containing insoluble calcium oxalate crystals that can cause irritation to the mouth, tongue, and digestive tract in both humans and pets. Ingestion may lead to symptoms such as an intense burning sensation, excessive drooling, and difficulty swallowing. Therefore, it is crucial to exercise caution when keeping a Swiss cheese plant, especially around curious children and pets.
| Characteristics | Values |
|---|---|
| Scientific Name | Monstera deliciosa |
| Family | Araceae |
| Toxicity | Toxic to cats, dogs, and humans |
| Symptoms of Poisoning | Intense burning sensation of the mouth, throat, lips, and tongue; excessive drooling, choking, swelling of the throat, vomiting, difficulty swallowing, renal failure, coma, and death |
| Treatment | Rinse mouth and flush with water, then give yogurt, milk, cheese, or another source of calcium |
| Soil | Well-draining, slightly moist, rich soil mix |
| Light | Bright, indirect light |
| Temperature | Moderate to high temperatures (15-30°C) |
| Humidity | High humidity (above 50%) |
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What You'll Learn
- Swiss cheese monstera is toxic to cats and dogs
- Symptoms include an intense burning sensation in the mouth, throat, lips and tongue
- It contains calcium oxalate crystals, which are released when chewed
- If ingested, rinse the mouth and seek veterinary advice
- In most cases, pets will make a full recovery within 24 hours

Swiss cheese monstera is toxic to cats and dogs
The Swiss cheese plant, also known as the Mexican breadfruit, hurricane plant, or cutleaf philodendron, is toxic to cats and dogs. The scientific name for the Swiss cheese plant is Monstera deliciosa, and it belongs to the Araceae family. All parts of the plant are considered toxic, although the leaves of some species may contain little to no toxins. The toxicity comes from insoluble oxalate crystals found in the juices inside the plant. These crystals can cause a range of uncomfortable symptoms in cats and dogs, including oral irritation, intense burning and irritation of the mouth, tongue, and lips, drooling, vomiting, and difficulty swallowing. In more severe cases, ingestion of larger quantities can lead to extreme difficulty breathing, rapid shallow gasps, convulsions, renal failure, coma, and even death.
It is important to note that the Swiss cheese plant is not typically lethal to cats and dogs, and in most cases of oxalate crystal ingestion, treatment can be managed at home. If your pet has ingested any part of the Swiss cheese plant, you should immediately rinse their mouth and flush it thoroughly with water. You can then give them yogurt, milk, cheese, or any other source of calcium to help relieve pain and precipitate the calcium oxalate crystals. In most cases, your pet will make a full recovery within 12 to 24 hours of ingestion. However, if your pet is experiencing more severe symptoms, such as persistent vomiting, diarrhea, or difficulty breathing, it is crucial to seek veterinary assistance immediately.
To prevent accidental ingestion, pet owners should take proactive steps to ensure their pets and plants can coexist safely. This includes educating yourself on plant toxicity and opting for non-toxic varieties whenever possible. Keep toxic plants, like the Swiss cheese plant, out of your pet's reach by elevating them on high shelves or hanging them out of leap range. You can also designate a cat- or dog-free zone for your plants, using physical barriers or other rooms where pets are not allowed. Additionally, always have emergency numbers, such as the ASPCA Animal Poison Control Center or the Pet Poison Hotline, readily available in case of accidental ingestion.
While the Swiss cheese plant is toxic to cats and dogs, some sources suggest that the level of toxicity may vary among different types of Monstera plants. For example, the Mini Monstera, a cousin of the Swiss Cheese Vine, may be less toxic to cats, as they are often deterred by the plant's off-putting flavor. However, even a small bite can lead to adverse effects, so it is crucial to prioritize pet safety and keep all potentially toxic plants out of reach.
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Symptoms include an intense burning sensation in the mouth, throat, lips and tongue
The Swiss Cheese Plant, or Monstera deliciosa, is toxic to cats, dogs, and humans. The plant contains calcium oxalate crystals, which are needle-like and sharp. When ingested, these crystals cause an intense burning sensation in the mouth, throat, lips, and tongue. Other symptoms include excessive drooling, choking, swelling of the throat, and difficulty swallowing. In more severe cases, ingestion can lead to extreme difficulty breathing, rapid shallow gasps, convulsions, renal failure, coma, and even death.
If you suspect that your pet has ingested any part of the Swiss Cheese Plant, it is important to act quickly. Rinse and flush their mouth thoroughly with water, then give them yogurt, milk, cheese, or another source of calcium to help relieve the pain and possibly precipitate some of the calcium oxalate crystals. In most cases, pets will make a full recovery within 12 to 24 hours of ingestion. However, if your pet is experiencing severe gastrointestinal upset, persistent vomiting, or diarrhea, it is important to monitor them carefully for signs of dehydration and provide fluid therapy if needed.
The intensity of the symptoms will depend on the amount ingested. Ingesting larger quantities of the plant can result in severe digestive upset and more serious complications, as mentioned above. Even if your pet only ingested a small amount, it is still important to take precautionary measures and seek veterinary advice.
The Swiss Cheese Plant is a beautiful and unique houseplant, but its toxicity cannot be overlooked. It is important to keep this plant out of the reach of curious pets and children to prevent accidental ingestion and potential harm. While the plant may add aesthetic value to your home, the well-being of your loved ones should always come first.
If you are a pet owner or have young children, it is advisable to choose non-toxic plants for your home to eliminate any risks associated with accidental ingestion. There are many attractive and safe alternatives to the Swiss Cheese Plant that can enhance your indoor space without compromising the safety of your family members, both furry and human.
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It contains calcium oxalate crystals, which are released when chewed
The Swiss cheese plant, or Monstera deliciosa, is a beautiful tropical climbing houseplant with distinctive holes and notches on its leaves. It is native to the rainforests of Central America, from southern Mexico to Panama. All parts of the plant are toxic to cats and dogs, and mildly toxic to humans, due to the presence of calcium oxalate crystals. These crystals are found in special cells called idioblasts, which are also present in a number of other plant species, both poisonous and non-poisonous. When the leaves, flowers, or stems of the plant are chewed, the tips of the idioblasts break, allowing saliva or sap to enter the cell. This causes the gelatinous material inside the cell to swell, forcing the sharp, needle-like calcium oxalate crystals to shoot out violently into the surrounding area.
These crystals can cause immediate and painful irritation to the mouth, throat, tongue, and digestive tract, resulting in symptoms such as an intense burning sensation, excessive drooling, choking, swelling of the throat, and difficulty swallowing. In more severe cases, ingestion of larger quantities can lead to extreme difficulty breathing, rapid shallow gasps, convulsions, renal failure, coma, and even death. While it is possible to recover from severe calcium oxalate poisoning, permanent liver and kidney damage may already have occurred.
If you suspect that your pet has ingested any part of a Swiss cheese plant, it is important to act quickly. Rinse and flush their mouth thoroughly with water, and then give them yogurt, milk, cheese, or another source of calcium to help relieve the pain and possibly precipitate some of the calcium oxalate crystals. In most cases, your pet should make a full recovery within 12 to 24 hours. However, if they are experiencing severe gastrointestinal upset, persistent vomiting, or diarrhea, it is important to monitor them carefully for signs of dehydration and provide fluid therapy if needed. Additionally, giving them an antihistamine may be advisable to help reduce oral swelling.
While the Swiss cheese plant is toxic to both pets and humans, its fruit is edible and safe for human consumption. The fruit, known as ceriman or montera, has a sweet flavour that has been compared to a combination of pineapple and banana, with hints of mango. It is high in potassium and Vitamin C and is often used to flavour drinks and ice cream, or eaten fresh. However, it is important to ensure that the fruit is ripe before consuming it, as unripe fruit contains calcium oxalate crystals that can cause irritation to the mouth.
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If ingested, rinse the mouth and seek veterinary advice
The Swiss Cheese Plant, or Monstera deliciosa, is toxic to cats and dogs. The plant contains insoluble calcium oxalate crystals, which may cause injury to the mouth, tongue, and digestive tract. If ingested, the mouth should be rinsed and flushed thoroughly with water. The affected animal can then be given a source of calcium such as yoghurt, milk, or cheese to help relieve pain. In most cases, the animal will make a full recovery within 12 to 24 hours of ingestion. However, if the animal is experiencing severe gastrointestinal upset, persistent vomiting, and diarrhoea, they should be carefully monitored for signs of dehydration and given fluid therapy if needed.
If your pet has ingested any part of a Swiss Cheese Plant, it is important to contact your veterinarian as soon as possible. While waiting for veterinary advice, you can take some immediate steps to help your pet. Firstly, rinse their mouth with water to flush out any remaining plant material and toxins. You can also give them small amounts of yoghurt, milk, or cheese, as these calcium-rich foods can help to reduce the impact of the toxins.
If your pet is displaying signs of oral irritation, such as excessive drooling, difficulty swallowing, or vomiting, it is important to act quickly. Rinsing their mouth and offering them calcium-rich foods can provide some initial relief. However, it is crucial to seek veterinary advice as soon as possible to ensure your pet receives proper treatment and monitoring. The veterinarian may recommend additional steps or treatments based on your pet's specific condition and symptoms.
In cases of severe toxicity, your pet may experience more serious symptoms such as intense burning in the mouth, throat, and lips, as well as difficulty breathing. These symptoms may occur up to two weeks after ingestion. If you observe any of these signs, immediate veterinary care is essential. While rinsing the mouth and providing calcium sources can be an initial step, the veterinarian will be able to provide specialised care and treatment to address the more severe symptoms.
It is important to note that even if your pet does not show immediate symptoms, it is still advisable to consult a veterinarian. They can provide guidance on monitoring your pet for any delayed or subtle symptoms that may develop over time. Additionally, they can offer advice on preventing future incidents and ensuring the safety of your pet and your Swiss Cheese Plant's peaceful coexistence.
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In most cases, pets will make a full recovery within 24 hours
The Swiss cheese plant, or Monstera deliciosa, is toxic to pets. All parts of the plant are considered poisonous, although the leaves of some species may contain little to no toxins. The plant contains insoluble calcium oxalate crystals, which are needle-like and can cause injury to the mouth, tongue, and digestive tract. If ingested, symptoms may include an intense burning sensation in the mouth, throat, lips, and tongue, excessive drooling, choking, swelling of the throat, and difficulty swallowing. In some cases, ingestion can lead to severe digestive upset, extreme difficulty breathing, rapid shallow gasps, convulsions, renal failure, coma, and even death.
However, it's important to note that most cases of calcium oxalate ingestion can be treated at home, and pets will typically make a full recovery within 12 to 24 hours. If you suspect your pet has ingested any part of a Swiss cheese plant, immediately rinse and flush their mouth thoroughly with water. Then, give your pet yogurt, milk, cheese, or another source of calcium to help relieve pain and precipitate the calcium oxalate crystals.
While most pets will recover within 24 hours, some may experience more severe symptoms such as persistent vomiting and diarrhea. In these cases, it is important to monitor your pet carefully for signs of dehydration and provide fluid therapy if needed. Additionally, if there is oral swelling, it may be advisable to administer an antihistamine, such as diphenhydramine (Benadryl), to help reduce the swelling.
The severity of symptoms and the speed of recovery depend on the amount of plant material ingested. Ingesting larger quantities can result in more severe symptoms and potential long-term health consequences. Therefore, it is crucial to seek veterinary assistance immediately if you suspect your pet has ingested any amount of the Swiss cheese plant, as prompt treatment can significantly improve the chances of a full and rapid recovery.
Overall, while the Swiss cheese plant is toxic to pets, most cases of ingestion can be managed at home, and full recovery is typically achieved within 24 hours with appropriate and timely treatment. However, it is always best to prevent access to the plant and seek veterinary advice if you are concerned about your pet's health.
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Frequently asked questions
Yes, Swiss cheese monstera is toxic to cats and dogs. It contains insoluble calcium oxalate crystals that may cause injury to the mouth, tongue, and digestive tract.
If you suspect your pet has ingested Swiss cheese monstera, you should immediately rinse and flush their mouth with water. You can then give them yoghurt, milk, cheese, or any other source of calcium to help relieve the pain. In most cases, pets will make a full recovery within 12 to 24 hours of ingestion. However, if your pet experiences severe gastrointestinal upset, persistent vomiting, or diarrhea, you should contact your veterinarian.
Swiss cheese monstera plants are low-maintenance and can survive without much effort, making them ideal for both beginner and experienced plant owners. They have attractive glossy leaves and can add a tropical vibe to any room.
Swiss cheese monstera plants prefer bright, indirect light and moderate to high humidity. They should be watered regularly, but be careful not to overwater them as this can lead to root rot. Fertilize your plant regularly from spring until fall.

























