Why cats eat grass is an unknown factor for pet owners. Cats’ intriguing habit of eating grass has drawn interest from both researchers and pet owners. Even though domestic cats are meant to be carnivores, many of them exhibit an unexpected tendency to munch on grass whenever they get the chance. Considering that grass has no nutritional value for a cat’s diet, this behaviour frequently leaves owners wondering why their cat does it.
Some ideas claim that cats eating grass are connected to innate tendencies that they got from their wild ancestors, while others say that it could be a natural way to relieve stomach pain or help get rid of hairballs. The enigma grows when certain cats show a preference for particular kinds of grass, raising theories about possible tastes or therapeutic benefits.
Pet owners are left in awe of the mysterious bond between cats and grass as they see their feline pals engage in this behaviour, which inspires them to learn more about and value the peculiar behaviours of their furry pets.
Cats Eat Grass - Instinctual Behaviour

The reason cats eat grass stems from their evolutionary background as predators and carnivores. Although domestic cats today mostly eat prepared cat chow, their predecessors were untamed predators who would eat entire prey, even the contents of their target’s stomachs. The following evolutionary theories explain why cats eat grass:
- Behaviour Based on Instincts: Cats still exhibit a lot of their natural tendencies, such as the need to eat plants. Cats may have eaten grass along with their prey in the wild, and domestic cats still exhibit this behaviour.
- Dietary Supplement: Cats eat grass because grass can supply vital elements that a strictly carnivorous diet could be deficient in. It has fibre, which helps control bowel movements and improve digestion. Moreover, grass could provide minerals and vitamins that help motion. Grass may also contain minerals and vitamins that are beneficial to general health.
- Therapeutic Aspects: For cat grass-eating habits, scholars propose that cats eat grass as a natural means of self-medication. Grass may help cats throw up so they may get rid of hairballs or indigestible material from their stomachs. In addition to preventing blockages, this natural purging procedure can assist ease intestinal discomfort.
- Natural Laxative: Cats eat grass because the enzymes in the grass have the ability to function as a moderate laxative, encouraging cats to go to the toilet. This might be especially helpful for cats that are experiencing constipation or hairball problems.
- Behavioural Enrichment: Cats eat grass as they provide cats with environmental enrichment in addition to possible nutritional and medical benefits. Chewing grass stimulates their minds and satisfies their natural curiosity to investigate and engage with their environment.
All things considered, cats’ propensity to consume grass is a complicated behaviour shaped by both their current nutritional, food options and physiological needs and their evolutionary history as hunters. Even though each cat may have different motivations, the evolutionary background might help clarify this intriguing facet of feline behaviour.
Potential Health Benefits

Although domestic cats eat meat as their main food, occasionally cats eat grass, there might be health benefits of cats eating grass some of which include
- Assist with Digestion: The fibre in grass encourages bowel motions, which can assist control a cat’s digestive system. This can be very helpful for cats that are constipated or exhibiting irregularities. Hence cats eat grass as they act as a digestive aid for cats.
- Handling Hairballs: Cats frequently groom themselves, swallowing loose fur in the process. By causing vomiting, eating grass may aid in the removal of hairballs from the stomach and avoid discomfort and obstructions.
- Nutritional Support: Grass contains important nutrients that are good for your health and well-being, like vitamins A and K, antioxidants, and chlorophyll. Even though cats must eat carnivores, adding a small bit of grass to their diet natural instincts in cats could provide them with extra vitamins.
Eating grass is a natural behaviour
- Cats eat grass as a natural inclination and stimulate their minds. Reasons cats chew grass to investigate their surroundings and participate in natural behaviours, which is a type of environmental enrichment.
- When faced with stress or worry, some cats may resort to chewing grass as a coping strategy. When cats are in emotional distress, cats eat grass which can assist release tension and provide them with a sense of calm.
- Cats who eat grass may benefit from it in terms of their health, but it’s important to make sure the grass they eat is healthy and devoid of pesticides or other dangerous materials. Additionally, it’s advised to speak with a veterinarian if a cat eats grass excessively or shows symptoms of disease after doing so.
Safe Grass Options
Feline grass consumption helps with your cat’s diet, it is necessary that grass is devoid of pesticides, herbicides, and other potentially dangerous chemicals. The following are safe grass alternatives that you can give your feline companion:
- Catgrass: Cat grass, often known as wheatgrass, is a common indoor cat food that is typically cultivated from the seeds of wheat, barley, oats, or rye. These grasses are widely accessible in pet stores and are very simple to grow. Cat grass is safe for cats to chew on and contains important nutrients and fibre.
- Ryegrass: Another choice that is suitable for cats is ryegrass, which may be grown both indoors and outdoors. It’s a good option for your cat’s diet because it’s high in fibre and nutrients.
- Oat grass: Oat grass can assist move hairballs through the digestive tract more easily and is kind to a cat’s health. It gives cats vital vitamins and minerals and is simple to grow.
- Barley Grass: Barley grass has a reputation for being detoxifying and is useful for cleaning a cat’s digestive system. It may be grown both indoors and outdoors and is safe for cats to eat.
- Organic Grass: Make sure the grass is free of pesticides, herbicides, and other chemicals if you decide to let your cat graze outside. Choose a grass that is organic or that hasn’t been exposed to any dangerous chemicals.
Observing Your Cat's Behaviour
Seeing your cats eat grass can reveal important information about their health and well-being. The following advice might help you keep an eye on and comprehend how much grass your cat is eating:
- Frequency: Observe how frequently your feline consumes grass. While eating grass on occasion is natural and may have health advantages, frequent consumption may point to a problem, such as nutritional deficits or gastrointestinal irritation.
- Grazing Patterns: Pay attention to your cat’s preferred times for eating grass. While some cats graze on grass all day, others might only do so in certain circumstances, including right after a meal or when they’re feeling under the weather.
- Grass Types: See whether your cat exhibits a predilection for any particular kind of grass. While some cats could appreciate coarser grasses like rye or barley, others might prefer softer grasses like wheatgrass. Giving your cat a range of grass selections can help you accommodate their tastes.
- Behaviour Before and After: Observe your cat’s actions both before and after giving it grass to eat. It could be worthwhile to see a veterinarian to rule out any underlying health concerns if your cat exhibits indications of distress, feels lethargic, or vomits repeatedly after eating grass.
- Supervised Grazing: If you let your cat graze outside, keep an eye on their outside activities to make sure they don’t eat any toxic plants or pesticide-treated grass.
- Health Check: Keep a close eye on your cat’s general well-being and behaviour, including their energy levels, eating patterns, and litter box routines. Discuss any changes in your pet’s grass-eating habits as well as any other symptoms of disease or discomfort with your veterinarian right away.
Tips for growing cat-friendly grass indoors or outdoors
Indoor cat grass options
- Select the Correct Grass: Go for cat-friendly types of grass like barley, oat, or wheatgrass. These grasses are easily found in garden centres and pet stores, and they are safe for cats to eat.
- Choose a Container: To plant the grass seeds, use trays or shallow containers with drainage holes. This avoids waterlogging, which can promote the formation of mould, and lets extra water drain away.
- Use Organic Soil: Use a soilless mix made specifically for indoor planting, or fill the pots with organic potting soil. Don’t use dirt from your garden; it can contain pests or other toxins.
- Plant the Seeds: Using your fingers, gently press the grass seeds into the soil, distributing them evenly throughout the surface. After lightly moistening the soil with water, cover the seeds with a thin layer of mud.
- Provide Enough Light: Set the containers at a windowsill or balcony that receives indirect sunlight, or in a sunny spot. For cat grass to grow, it needs four to six hours of sunshine each day.
- Water Often: Make sure the soil is consistently damp but not soggy. Whenever the top inch of soil seems dry to the touch, lightly water the grass with a fine mist setting on a spray bottle or watering can.
- Trim the Grass: When the grass begins to grow, trim it as needed to promote new growth and keep it from getting too tall and lanky. To cut the grass blades to the correct length, use clean scissors.
- Supervise Grazing: Put the containers in a reachable but watched-over spot where your cat is free to munch on the grass wherever they choose. Keep an eye on your cat’s grass-eating habits to make sure they don’t overeat or consume a lot at once.
Outside Grass Growing
- Pick a Safe Spot: If growing cat grass outside, pick a spot that is free of pesticides, safe from traffic, and away from any potential risks. Make sure no harmful plants or substances are present in the grass.
- Prepare the Soil: Using a garden fork or tiller, loosen the soil in the selected area and remove any debris or weeds. Use fertiliser or organic compost to amend the soil and add nutrients to support the growth of healthy grass.
- Plant the Seeds: To sow the grass seeds, equally distribute them over the surface of the prepared soil and gently press them into the ground using a rake or your hands. To help the seeds take root, lightly cover them with soil and give them a little water.
- Water Frequently: Throughout the germination stage, make sure the soil is continuously moist. Water lightly whenever the top inch of soil feels dry. Water deeply but sparingly once the grass takes root to promote deep root development.
- Prevent Pests: Use a lightweight mesh or bird netting to cover the newly planted grass until the seeds germinate and take root, keeping out pests like birds and rodents.
- Supervise Outdoor Grazing: Make sure your cat is supervised when they graze on the outdoor grass to prevent them from consuming dangerous plants or coming into contact with other outdoor hazards. Establish a secure outdoor space for supervised grazing and exploring.
Conclusion
To sum up, cats’ grass-eating habit is an interesting facet of their innate desires and eating patterns. Despite being obligate carnivores, cats eat grass for a variety of reasons, such as to help with digestion, control hairballs, and provide vital nutrients. Cat owners can promote the health and well-being of their feline animals while respecting their innate inclinations by providing safe grass options and regularly monitoring their behaviour.
But if your cat’s grass-eating behaviour changes or causes you to have worries, it’s important to stay alert and see a vet. Cat owners may guarantee the happiness and well-being of their feline companions by exercising vigilant monitoring and proactive cat caring tips.
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