What Vegetables Cats Cannot Eat?

Hey there, fellow cat lovers. Are you aware that some of the veggies we humans consider healthy and nutritious can be harmful or even toxic to our feline friends? As much as we’d love to share a fresh salad with our adorable kitties, not all vegetables are created equal when it comes to their digestive systems. So, what veggies should you avoid feeding your cats?

In this blog post, we’re going to explore the dos and don’ts of feeding vegetables to cats. We’ll also reveal some of the most common veggies that could potentially harm our furry friends, including onions and avocados. But don’t worry – we’ll also discuss alternative options that are safe and beneficial for your cat’s health.

As responsible pet owners, it’s crucial to learn about what vegetables cats cannot eat. By doing so, we can help prevent illness and ensure our kitties lead happy and healthy lives. So let’s dive in and discover everything you need to know about feeding veggies to your feline companions.

Onions: A Toxic Veggie for Cats

It’s important to know that not all vegetables are safe for cats to eat. One vegetable that should never make it into your cat’s food bowl is onion.

Onions contain a compound called N-propyl disulfide, which can cause serious damage to your cat’s red blood cells and lead to anemia. Even small amounts of onion can be harmful, and symptoms may include vomiting, diarrhea, lethargy, and loss of appetite. In severe cases, cats may experience difficulty breathing, elevated heart rate, and even collapse.

It’s crucial to note that onions can be present in cooked dishes such as soups, stews, and gravies. Other members of the allium family such as garlic, shallots, and chives can also be toxic to cats and should be avoided at all costs.

To keep your cat safe from ingesting onions or any other harmful vegetable, it’s essential to monitor their food carefully. Always check the ingredients in any food given to your cat and make sure they do not contain any toxic vegetables.

If you suspect that your cat has ingested onions or any other harmful vegetable, it’s vital to contact your veterinarian immediately. Treatment may involve inducing vomiting or providing supportive care such as IV fluids or blood transfusions.

Garlic and Chives: Off-Limits for Felines

While these ingredients can add a delicious flavor to your meals, they are strictly off-limits for our feline companions. As a cat expert, let me delve into the reasons why.

Garlic and chives belong to the Allium family, which also includes onions and shallots – all of which are toxic to cats. These ingredients contain compounds that can damage a cat’s red blood cells, leading to anemia. This can cause a range of symptoms such as vomiting, diarrhea, lethargy, and pale gums. In severe cases, garlic or chive poisoning can even prove fatal.

It’s important to note that even small amounts of garlic or chive can be harmful to a cat’s health. While some herbs and spices are beneficial for cats in moderation, garlic and chives are not among them. It’s crucial to read ingredient labels carefully when feeding your cat any type of human food or supplement.

Cats are notorious for their picky eating habits, but they may still be tempted by the aroma of your garlic-infused meals. If you suspect that your feline has consumed garlic or chives, it is imperative to seek veterinary attention right away. Your vet may need to perform blood tests to check for anemia and provide supportive care such as fluids and medications.

Avocado: A No-No for Cats

While we may enjoy the creamy, delectable taste of avocados, it’s important to remember that they are a big no-no for our feline friends. This beloved fruit contains a toxin called persin, which can cause severe health issues in cats such as vomiting, diarrhea, and even heart damage.

It’s crucial to keep in mind that all parts of the avocado plant are toxic to cats, including the fruit itself, its leaves, and seeds. Even the smallest amount of avocado can cause harm to your kitty, so it’s best to keep this fruit out of their reach at all times.

If you suspect your cat has ingested any part of the avocado plant, it’s essential to seek immediate veterinary care. Your vet may recommend inducing vomiting or administering activated charcoal to absorb the toxins and prevent them from entering your cat’s bloodstream.

Tomatoes: Ripe or Unripe, Avoid Them Both

However, when it comes to tomatoes, ripe or unripe, it’s best to avoid them altogether. Why? Well, tomatoes contain two harmful alkaloids – solanine and tomatine – that can wreak havoc on a cat’s health.

Solanine and tomatine are present in all parts of the tomato plant, but the leaves and stems have higher concentrations than the fruit itself. And even though ripe tomatoes have lower levels of these toxic compounds, they can still cause severe gastrointestinal upset, muscle weakness, and cardiac effects in cats. In short, any part of the tomato plant is off-limits for your furry friend.

Some pet owners may think that feeding their cats small amounts of ripe tomatoes is harmless. However, even a nibble can cause digestive problems like vomiting and diarrhea. So, it’s always better to play it safe and avoid feeding tomatoes to your cat altogether.

There are plenty of other safe veggies that your cat can enjoy without any adverse effects. Green beans, carrots, and cucumbers are just a few examples of feline-friendly vegetables that you can include in their diet.

Rhubarb Leaves: Dangerous for Cats

While some human foods like tomatoes can cause health issues in cats, others like rhubarb leaves can be extremely hazardous. Rhubarb leaves contain a chemical called oxalic acid, which can cause severe kidney damage and even death in cats if ingested.

Symptoms of rhubarb leaf poisoning in cats include vomiting, diarrhea, lethargy, and tremors. If you suspect your cat has ingested rhubarb leaves, do not hesitate to seek veterinary care immediately. Your veterinarian may induce vomiting to remove any remaining plant material from your cat’s stomach.

It’s important to note that while the toxic compounds in rhubarb leaves are most concentrated in the leaves themselves, the stems and roots also contain some amounts of oxalic acid. Therefore, it’s best to avoid feeding rhubarb to your cat altogether. Here are some additional tips to keep your cat safe:

  • If you have a garden or keep houseplants, make sure to keep any rhubarb plants out of reach of your cat.
  • Be cautious when using rhubarb as an ingredient in recipes that your cat may come into contact with.
  • Always err on the side of caution when it comes to your cat’s health and safety.

Mushrooms: Potential Toxin for Cats

You provide them with the best of everything, including food, a cozy bed, and plenty of toys. However, there are some things that may seem harmless but can be quite dangerous for your furry companion. One such thing is mushrooms.

Mushrooms are a popular ingredient in many dishes, but they can be toxic to cats. Some mushrooms contain toxins that can cause severe health issues or even death in cats. The Amanita species is the most dangerous type of mushroom for cats, containing amatoxins that can lead to liver failure and death. Shockingly, even a small amount of this toxin can prove fatal to your kitty.

False morel and inky cap mushrooms are other types that are potentially toxic to cats. The former can cause vomiting and diarrhea, while the latter can lead to disorientation and seizures. It’s vital to note that even non-toxic mushrooms can still cause gastrointestinal upset in cats.

If you suspect your cat has ingested mushrooms, it’s essential to seek veterinary care immediately. Symptoms of mushroom toxicity in cats include vomiting, diarrhea, drooling, lethargy, jaundice, and seizures. Treatment may involve inducing vomiting, administering activated charcoal to absorb toxins, and providing supportive care such as IV fluids and medications to protect the liver.

Prevention is always better than cure when it comes to keeping your feline friend safe from mushroom toxicity. Avoid feeding your cat any type of mushroom, and keep them away from areas where mushrooms might grow. If you suspect your cat has ingested mushrooms or any other toxic substance, don’t hesitate to seek veterinary care right away.

Raw Potatoes: A Risky Choice for Cats

This might come as a surprise, but the truth is, raw potatoes can be harmful to cats due to the presence of solanine.

Solanine is a toxic substance found in the leaves, stems, and unripe parts of the potato plant. It can cause severe digestive issues and even lead to death in extreme cases. Cats are particularly vulnerable to solanine poisoning because their bodies are not equipped to process this substance efficiently. Even small amounts of solanine can cause serious health problems for them.

Symptoms of solanine poisoning in cats include vomiting, diarrhea, lethargy, weakness, and loss of appetite. In severe cases, cats may experience seizures, respiratory distress, or organ failure. Therefore, it’s crucial for cat owners to keep raw potatoes and potato-containing products out of reach of their feline friends.

This includes raw potato chips, fries, and baked potatoes that have not been adequately cooked. It’s also important to discard any green or sprouted potatoes as these can contain high levels of solanine.

To keep your cat safe from solanine poisoning, it’s best to stick to a balanced diet that consists of cat-friendly foods such as meat, fish, and vegetables that are safe for feline consumption. By being mindful of what we feed our cats, we can ensure their health and well-being for years to come.


To wrap things up, it’s important to remember that not all vegetables are created equal when it comes to our feline companions. As pet owners, we must be vigilant about what vegetables cats cannot eat in order to avoid any potential health hazards.

A number of common vegetables can pose a serious threat to cats, including onions, garlic, chives, avocados, tomatoes (ripe or unripe), rhubarb leaves, mushrooms and raw potatoes. These veggies contain compounds that can lead to a range of symptoms such as vomiting, diarrhea, lethargy, anemia and even organ failure.

However, there are still plenty of safe and nutritious options out there for your furry friend. Some great examples include green beans, carrots, cucumbers and cooked sweet potatoes.

It’s crucial to carefully read ingredient labels on any human food or supplement you plan on feeding your cat. Always keep toxic vegetables out of reach and monitor your cat’s food intake closely. If you suspect your cat has ingested harmful substances like toxic veggies or mushrooms seek veterinary attention immediately.