Why do cats eat grass?

Is your cat happily chewing on a blade of grass? No need to worry. Many cats eat grass – and for various reasons. In many cases, this behavior is completely normal. Nevertheless, there are situations where consuming grass can endanger your pet's health.

But why do cats eat grass at all? What benefits can it have, what risks exist, and when should cat owners pay attention? In this article, we provide an overview.

Cats eat grass for many reasons

It is usually normal for cats to eat grass occasionally. This behavior is often linked to digestion, grooming, or an instinctive need.

If you observe your cat eating grass from time to time, you can usually relax. Many cats consume grass as a matter of course. This way, the feline takes in fiber, which can aid digestion. It is also believed that grass plays a role in the absorption of certain nutrients.

However, since cats can only digest grasses to a limited extent, eating grass can also cause the cat to vomit. This can expel hairballs or other indigestible components from the stomach.

Grass for digestion

When a cat grooms itself, it inevitably swallows hair. This can accumulate in the digestive tract and lead to problems. According to a common theory, cats eat grass to make it easier to excrete hairballs and other foreign bodies. The fiber contained is supposed to support their passage through the intestines.

In addition, consuming grass can induce vomiting. The blades of grass and the bitter substances they contain irritate the stomach lining, causing the cat to vomit. Similar to a cat with diarrhea, the body tries to rid itself of harmful substances here as well.

Cat owners can support grooming by regularly brushing their cat's fur. This can reduce the amount of swallowed hair.

Supply of healthy nutrients

It is often suspected that cats also absorb certain nutrients, such as folic acid, through grass. Cats usually get all essential nutrients through a balanced diet. Nevertheless, grass seems to be additionally appealing to some animals.

The calming effect

If a cat shows unusual behaviors, seems nervous, timid, or withdraws, stress may be behind it. Some cat owners also observe increased grass consumption during such phases.

It is believed that chewing on grass can have a calming effect for some cats. If the cat eats hastily immediately after food or vomits afterwards, stress or unease can also play a role.

Eating grass can be dangerous for cats

Untreated grass is usually unproblematic in small quantities. It becomes dangerous mainly when pesticides, herbicides, or poisonous plants are involved.

Generally, consuming grass is considered rather harmless for cats and can even be helpful in everyday life. Your cat can usually safely eat the grass in your own garden, provided the lawn has not been treated with chemicals. If the cat roams through other gardens, this cannot always be controlled.

Indoor cats often do not have access to safe grass. Therefore, it may be useful to provide a pot of cat grass indoors. This is particularly helpful if the cat might otherwise chew on houseplants.

If the cat suddenly eats a noticeably large amount of grass, frequently gags, or shows other symptoms, it should be examined by a veterinarian. A nutrient deficiency or an illness could also be behind it.

Beware of poisonous plants

Some plants can significantly harm a cat's health. Cat owners should therefore carefully research which plants are safe indoors and outdoors. Consuming certain plants can cause severe symptoms, including liver failure.

The following plants, for example, are considered toxic to cats:

• Aloe Vera
• Amaryllis
• Lilies
• Erica plants like Rhododendron
• Cyclamen
• Chili plants
• Ivy
• Poinsettia

Pesticides are a danger

Cat owners are responsible for their pet's health. If the cat is in its own garden, neither herbicides nor insecticides should be used there. Other chemical treatments of the lawn should also be avoided.

If the cat leaves the garden to roam in the neighborhood, its food intake is difficult to control. To prevent the consumption of contaminated grass or poisonous plants, it may be worthwhile to provide cat grass indoors or in its own protected outdoor area.

Cat grass seeds are available in many pet stores. These are often wheat, oat, or barley seeds.

Control your cat's grass consumption and act quickly in an emergency

Precisely controlling a cat's grass consumption is often difficult in practice. For indoor cats, consumption can still be detected by the presence of cat grass. For outdoor cats, this is much harder.

Therefore, observing the general behavior is particularly important. If the cat eats grass in a normal amount and shows no other abnormalities, it is usually unproblematic. However, if it vomits blood, gags persistently, or shows severe symptoms, a veterinarian should be consulted immediately.

With older cats from about 10 years of age, cat owners should also schedule regular check-ups. As they age, the risk of illness increases. For example, diarrhea in old cats can indicate more serious health problems.

When is a vet visit advisable?

A vet visit is especially important if the cat suddenly eats a lot of grass, vomits frequently, vomits blood, gags, or its behavior changes significantly.

Occasional grass eating is usually not a problem. However, there are clear warning signs when veterinary clarification is advisable or even urgent:

• The cat suddenly eats very large amounts of grass.
• It vomits frequently or immediately after eating grass.
• There is blood in the vomit.
• The cat gags persistently, as if something is stuck in its throat.
• Additional symptoms such as diarrhea, lethargy, or loss of appetite occur.

In such cases, a blade of grass may be stuck, or there may be another underlying health issue. The cat should then be examined.

FAQ: Why do cats eat grass?

What if the cat eats grass?

It is generally harmless for a cat to eat grass. Many cats do this instinctively.

How important is grass for cats?

It is believed that grass can aid digestion and help in expelling hairballs. It also seems to have a calming effect for some cats.

Why does my cat vomit when it eats grass?

If a cat eats grass, the blades and bitter substances can irritate the stomach lining and thus induce vomiting.

How often should a cat eat grass?

Cats usually instinctively eat the amount they need. It only becomes noticeable if the behavior suddenly increases sharply or additional symptoms appear.

Conclusion – In moderation, grass is usually harmless for cats

The good news: Many cats eat grass quite normally. It only becomes problematic if large quantities are consumed or additional symptoms occur.

Cats that regularly eat small amounts of grass usually react instinctively to a need. This behavior can be related to grooming, digestion, or general well-being. At the same time, potential risks should not be underestimated.

If the cat eats a lot of grass, vomits frequently, or if blood, gagging, or other abnormalities occur, cat owners should not hesitate to have the animal examined by a veterinarian. For indoor cats, safe cat grass can be a good alternative – especially if it makes toxic houseplants less appealing.