Can Cat Grass Make Cats Sick?

Curiosity may have killed the cat, but it’s also what makes them so endearing. They love to explore and taste new things, which is why cat grass has become such a popular addition to many pet owners’ homes. But could this seemingly harmless plant actually be harmful? Well, like most things in life, the answer isn’t black and white.

In this blog post, we’re going to dig deep into the question that every cat owner has asked themselves: Can cat grass make cats sick? We’ll take a closer look at what cat grass is and why cats are so obsessed with it. We’ll also explore the potential dangers it poses to our furry friends and how to spot common symptoms of illness.

But don’t worry, it’s not all doom and gloom. Cat grass can actually provide some much-needed benefits for your feline friend. From aiding digestion to providing essential vitamins and minerals, there are plenty of reasons to keep your cat munching on this green goodness. However, as responsible pet owners, we need to be aware of any potential risks and take necessary precautions.

So let’s get started on uncovering the truth about cat grass and whether or not it’s a healthy choice for your curious kitty. By the end of this post, you’ll have all the information you need to keep your feline friend safe while still indulging their love for this favorite treat.

What is Cat Grass?

Cat grass is a type of grass that is purposefully grown for cats to nibble on, and it is usually made up of wheatgrass or barley grass. But what exactly makes cat grass so beneficial for cats? Let’s explore this further.

Firstly, cat grass offers a natural source of fiber for cats. Being obligate carnivores, cats’ diets consist mainly of meat, which can lead to digestive issues due to the lack of fiber. Cat grass can help regulate their digestive system, prevent constipation, and promote healthy bowel movements.

Secondly, cat grass can aid in hairball control. Cats are known for their meticulous grooming habits, which often result in the ingestion of loose hairs. These hairs can accumulate in their digestive system and cause hairballs. Cat grass helps stimulate the digestive system and promote healthy bowel movements, making it easier for cats to expel hairballs.

It’s vital to note that not all types of grass are safe for cats to consume. Some types of grass, such as Bermuda grass or St. Augustine grass, can be harmful to cats if ingested. It’s crucial for pet owners to purchase cat grass that is specifically grown for feline consumption from a reputable source.

Additionally, some cats may have allergies or sensitivities to the grass, which could cause vomiting or diarrhea. It’s essential for pet owners to monitor their cats’ consumption and ensure they are purchasing clean and safe products.

Benefits of Cat Grass

Luckily, there’s a natural and safe way to do just that – by providing your cat with some delicious, nutritious cat grass. But what are the benefits of cat grass for cats? Let’s dive in.

  • Digestive Health: Cat grass is an excellent source of fiber, which aids in digestion and helps move food through the digestive system. This can prevent constipation and other digestive issues, making it a natural and effective way to promote healthy bowel movements.
  • Essential Nutrients: In addition to aiding digestion, cat grass provides essential vitamins and minerals that cats need to stay healthy. These include vitamins A, B, C, and E, as well as calcium and iron. These nutrients are crucial for maintaining healthy bones, teeth, skin, and fur.
  • Hairball Control: We all know how often cats like to groom themselves, which can lead to hairballs forming in their stomachs. Eating cat grass can help cats pass these hairballs more easily, reducing the risk of digestive problems.
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  • Mental Stimulation: Another great benefit of cat grass is that it can provide mental stimulation and entertainment for your furry friend. Many cats enjoy playing with and nibbling on the grass, which can keep them engaged and happy.
  • Safety First: It’s important to note that not all types of grass are safe for cats to eat. To avoid any potential harm, it’s recommended to only give your cat specially grown cat grass or wheatgrass.

Potential Risks of Cat Grass

It is important to be aware of the potential risks that come with this product.

One significant risk is contamination with harmful bacteria such as E. coli or Salmonella. This can occur due to soil that hasn’t been properly sterilized or water that has been contaminated. It is crucial to ensure that you purchase cat grass from a reputable source that guarantees safe and healthy growth conditions.

Another potential risk is an allergic reaction to the grass, which can lead to gastrointestinal problems such as vomiting or diarrhea. If you notice any adverse reactions in your cat after consuming cat grass, it’s important to discontinue use and speak with your veterinarian.

Furthermore, some types of cat grass may contain high levels of pesticides or other hazardous chemicals. Therefore, it’s essential to use only specially grown cat grass or wheatgrass that is free from any harmful additives.

Lastly, it’s essential to monitor how much cat grass your feline friend consumes and limit their intake if necessary. Consuming too much can cause digestive problems such as vomiting, diarrhea, or constipation.

Types of Grass that are Harmful to Cats

While many types of grass can provide health benefits for cats, others can be harmful and even toxic. Here are five types of grass that you should avoid giving to your cat:

Bermuda grass

This warm-climate grass is commonly used in lawns and landscaping. However, it contains cynodon, a toxic substance that can cause vomiting, diarrhea, and liver damage in cats.

Kentucky bluegrass

While this type of grass is popular in lawns, it can cause digestive issues and other health problems if ingested by cats.


Found in hay and winter lawns, ryegrass contains a fungus that produces toxins that can lead to neurological symptoms like tremors, seizures, and even death in cats.

Fescue grass

This grass is commonly used in lawns and landscaping but can also be found in hay. Fescue grass contains ergot fungus, which produces toxins that can cause symptoms such as vomiting, diarrhea, and even gangrene in cats.

Zoysia grass

Another popular lawn grass, zoysia can cause digestive issues if ingested by cats.

On the other hand, there are many types of safe grass for cats to eat. Wheatgrass and oat grass are two popular options that are high in essential vitamins and minerals. They can help support your cat’s overall health and digestion.

It’s important to note that not all cat grass sold in stores is safe for consumption. Some may contain harmful additives or pesticides. It’s best to grow your own cat grass at home using safe seeds or purchase from reputable sources.

How to Select Safe and Clean Cat Grass

Cat grass can be a great addition to your cat’s diet, aiding in digestion and hairball control. However, not all cat grass is safe for consumption, and it’s important to choose a clean and safe option for your furry friend. Here are five sub-sections to guide you in selecting the best cat grass for your feline friend.

Choose Organic Cat Grass

When selecting cat grass, it’s important to opt for organic options that are free from harmful pesticides or chemicals. These substances can be toxic to cats and cause health problems like vomiting, diarrhea, and respiratory issues. By choosing organic cat grass, you can ensure that your cat is consuming a healthy and safe product.

Find a Reputable Supplier

Choose a reputable supplier when purchasing cat grass. Look for companies that have a good reputation for producing high-quality pet products. Read reviews from other cat owners to get an idea of their experiences with different brands. This will help you avoid low-quality products that could harm your cat.

Check the Growing Environment

Make sure to check the soil type and growing environment of the cat grass before purchasing it. The ideal soil should be organic and free from contaminants, while the plants should be grown in a clean environment without harmful chemicals. This will guarantee that the cat grass is free from any toxins or parasites that could make your cat sick.

Choose Safe and Appropriate Varieties

Some types of grass can be harmful to cats if ingested, such as Bermuda grass or St. Augustine grass. It’s crucial to choose safe and appropriate varieties of cat grass that are specifically designed for cats. This will ensure that the grass is safe for consumption, won’t cause digestive issues, and is suitable for your furry friend’s dietary needs.

Monitor Your Cat’s Health

After introducing your cat to cat grass, monitor their behavior and health closely. While most cats can safely consume this plant without any issues, some may have allergies or other sensitivities. If you notice any changes in your cat’s behavior or health after introducing them to cat grass, it’s best to consult with your veterinarian to rule out any underlying health issues.

Common Signs of an Allergic Reaction in Cats

Unfortunately, allergic reactions in cats are not uncommon and can be triggered by various environmental factors, including cat grass. It’s important to be aware of the common signs of an allergic reaction in cats to identify and treat them promptly.

Excessive itching or scratching is one of the most obvious signs of an allergic reaction in cats. If your cat is persistently scratching, it can cause skin irritation, redness, and even hair loss. Continuous scratching can also lead to hot spots, which are painful and can be challenging to treat.

Sneezing or coughing is another sign that your cat may be having an allergic reaction. Inhaling allergens from cat grass can cause respiratory distress, particularly in cats with pre-existing respiratory conditions.

Vomiting and diarrhea are also symptoms of an allergic reaction in cats. These symptoms can be caused by ingesting cat grass that may contain harmful chemicals or pesticides.

In severe cases, an allergic reaction in cats can lead to anaphylaxis, a life-threatening condition. Symptoms of anaphylaxis include difficulty breathing, swelling of the face and throat, and a rapid heart rate. If you suspect that your cat is experiencing anaphylaxis, it’s crucial to seek emergency veterinary care immediately.

It’s worth noting that not all cats are allergic to cat grass. However, if you’ve introduced cat grass to your cat’s diet and notice any of these symptoms, it’s best to consult with a veterinarian immediately. They can diagnose the cause of the allergic reaction and provide appropriate treatment options.

Tips for Monitoring Your Cat’s Consumption of Cat Grass

One way to do this is by monitoring their consumption of cat grass. While cat grass provides numerous health benefits, too much of it can lead to digestive issues and other potential health problems. Here are some tips for monitoring your cat’s consumption of cat grass to keep them safe and healthy.

Limit the Amount of Cat Grass

While cat grass is healthy for cats, it’s important to limit their intake. Feeding your cat too much cat grass can cause digestive problems like vomiting and diarrhea. To prevent this, offer your cat no more than one tablespoon of cat grass per day. This will provide them with the benefits of cat grass without any adverse effects.

Observe Your Cat’s Behavior

After your cat has consumed the cat grass, observe their behavior for any signs of discomfort or unusual behavior. If they seem lethargic or lose their appetite, it may be a sign that they’ve had too much. Similarly, if you notice any symptoms like vomiting or diarrhea, contact your veterinarian immediately.

Choose Safe Cat Grass

Not all types of grass are safe for cats to consume. Ensure that the cat grass you provide is free from pesticides and other harmful chemicals. You can also grow your own organic cat grass to ensure its safety. By choosing safe cat grass, you can prevent any potential health problems that may arise from consuming harmful chemicals.

Don’t Force Your Cat to Eat Cat Grass

Like humans, cats have different tastes and preferences. Some cats may not like the taste of cat grass or may even have an allergy to it. Don’t force your cat to eat it if they don’t seem interested. Instead, try offering them different treats or toys that they enjoy.

Consult with Your Vet

If you’re unsure about your cat’s consumption of cat grass or have concerns about their health, consult with your veterinarian. They can provide you with more information about the safety and benefits of cat grass and recommend appropriate portions for your cat. By consulting with your vet, you can ensure that your cat is consuming the right amount of cat grass for their individual needs.

When to Consult a Veterinarian About Cat Grass Consumption

One way to do this is by offering cat grass as a treat or supplement to their diet. While cat grass can have many benefits, such as aiding in digestion and reducing hairballs, it’s important to be aware of when it’s necessary to consult a veterinarian about your cat’s consumption.

Here are some situations where you should consider seeking veterinary advice:

  • Unusual Behavior: If you notice any abnormal behavior in your cat after consuming cat grass, such as vomiting, diarrhea, or lethargy, it could be an indication of an underlying health issue that needs immediate attention. It’s best to call your veterinarian right away to determine the cause and receive proper treatment.
  • Existing Health Conditions: Cats who are already dealing with health issues like kidney disease or diabetes may be more sensitive to the effects of cat grass. In such cases, it’s crucial to consult a veterinarian about whether or not cat grass is safe for your cat.
  • Quality Control: Some types of cat grass may be treated with pesticides or other chemicals that could be harmful to your pet. If you’re unsure about the safety of the specific type of cat grass you’re providing for your cat, it’s always best to consult with a veterinarian before allowing them to consume it.


To sum it up, cat grass is a fantastic way to enhance your cat’s well-being. It aids in digestion, promotes healthy bowel movements, and reduces hairballs. However, it’s crucial to be cautious while selecting cat grass as some types can be hazardous for our feline friends, such as Bermuda grass or St. Augustine grass. Therefore, always opt for specially grown cat grass or wheatgrass that is free from harmful chemicals or pesticides.

It’s also vital to keep an eye on your cat’s consumption of cat grass and limit it if necessary. Overindulgence can result in digestive issues like vomiting and diarrhea. Moreover, some cats may have allergies or sensitivities to the grass, leading to adverse reactions.

If you observe any unusual behavior in your cat after consuming cat grass or have concerns about their health, do not hesitate to consult with your veterinarian immediately. They can provide you with more information about the safety and benefits of cat grass and suggest appropriate portions for your furry friend.