FREE next day delivery from £49

Unravelling the Mystery: Why Do Dogs Eat Grass?

Unravelling the Mystery: Why Do Dogs Eat Grass? - Very Important Pets

Have you ever wondered, "Why do dogs eat grass?" as your furry companion suddenly decides to snack on your lawn? You're not alone. Seeing a dog munching on grass leaves many pet parents puzzled and concerned about their pet's health. It's time to unravel the mystery and explore the reasons behind this seemingly odd behaviour. In this blog post, we'll explore various factors contributing to dog grass eating and discuss the health implications, along with strategies to address this interesting canine habit.

Short Summary

  • Grass-eating is a typical behaviour amongst dogs, which may be caused by instinctive behaviour, dietary deficiencies or taste/texture preferences.
  • Age and breed can contribute to the tendency of dog grass eating. Young ones are more prone due to curiosity, while certain breeds have genetic predispositions or dietary needs that influence this behaviour.
  • Addressing grass eating requires understanding underlying causes with diet improvement, mental/physical stimulation and providing safe alternatives as solutions.

Uncovering the Reasons: Why Dogs Eat Grass

Dogs eat grass for various reasons, some of which may be rooted in their ancestry. Otherwise it may be due to dietary deficiencies or personal taste and texture preferences. A study published in Applied Animal Behaviour Science in 2008 revealed that grass-eating is typical behaviour among domestic dogs. This finding suggests that this behaviour isn't unusual or unnatural. Grass is the most widely ingested plant by dogs, with 79% of dogs having consumed plants at some point in their lives.

But why do our furry friends crave this green treat? It could be that they are trying to supplement their diet with vitamins and minerals or are attracted to the taste and texture of grass. It could also be that they are trying to soothe an upset stomach or clean their teeth. Whatever the reason, it works.

Instinctive Behaviour

It's believed that grass eating may be an instinctive behaviour inherited from their wolf ancestors, who typically ingested plants as part of their diet. Wolves consume meat and plant matter, with grass making up a portion of their diet. This instinctive behaviour could be a remnant of their ancestral hunting days, where consuming the entire animal provided them various nutrients, including those coming from their prey's stomach.

In this context, grass eating can be seen as a natural part of a dog's genetic makeup, and a dog is eating grass simply because it's an age-old habit that has been passed down through generations of canines, including wild dogs, who ate grass as a part of their regular dog behaviour.

Dietary Deficiencies

Another possible reason dogs eat grass is to compensate for missing nutrients in their diet, such as fibre or specific vitamins and minerals. Fibre is crucial in a dog's diet, facilitating proper digestion and regular defecation. If a dog's diet lacks fibre or other essential nutrients, it may instinctively turn to grass to help fill this nutritional gap.

If you notice your dog frequently eating grass, it might be worth consulting your veterinarian about potential changes to their diet. Ensuring your dog receives a well-balanced diet with adequate fibre and nutrients can help reduce their desire to eat grass.

Taste and Texture

For some dogs, the simple pleasure of the taste and texture of grass is enough to entice them to indulge themselves in this green snack. Younger, tender shoots or dew-covered blades can be particularly appealing to our furry friends, who may enjoy the sensation.

Many dogs tend to consume grass when it's emerging in the spring, which could indicate that the new growth's taste and texture are particularly delicious to them. In this case, sensory enjoyment may drive grass-eating more than any underlying health or nutritional concerns.

The Role of Age and Breed in Grass Eating

While grass-eating is a typical behaviour observed in all breeds of domestic dogs, age and breed can play a role in this. Younger dogs may be more likely to partake in grass eating due to their natural curiosity and desire to explore their environment, which can sometimes lead them to eat grass or even when a dog eats other plants. To prevent your dog from eating grass, monitoring their outdoor activities and providing them with a well-balanced diet is essential.

Certain breeds may have a genetic predisposition or dietary needs that influence their inclination to eat grass.

Younger Dogs

Younger dogs may be more prone to eating grass as they explore and interact with their environment during their natural development. Dog owners should know that their heightened curiosity and desire to investigate new textures and tastes, including dog foods and the greenery in your backyard, could lead them to sample the grass.

A study has indicated that younger dogs consume more grass than older dogs. However, grass eating is still a typical behaviour in healthy dogs and is not usually associated with illness. As your dog matures, it may become less interested in eating grass. Still, it's essential to continue monitoring its behaviour and diet to ensure its overall health.

Breed Differences

Certain dog breeds may be more inclined to eat grass due to their genetic predisposition or dietary needs. While grass eating is an ordinary and frequent behaviour among all breed groups of domestic dogs, some breeds may have specific nutritional requirements or instincts that drive them to consume grass more frequently than others.

It is essential to understand your dog's breed-specific needs and provide them with a balanced dog's diet and appropriate mental and physical stimulation to help curb any potential grass-eating tendencies. Consult your veterinarian for guidance on your dog's specific breed and nutritional requirements.

Health Implications of Grass Eating

Grass eating can have both positive and negative health implications for dogs. While it may provide some dogs with upset stomach relief and additional fibre for digestion, it can also expose them to harmful substances, such as pesticides or parasites.

Ingestion of these substances can lead to various health issues, including vomiting, diarrhoea, and even organ damage. It is essential to monitor your dog's grass consumption.

Upset Stomach Relief

Eating grass may provide relief for a dog's stomach, especially when dealing with an upset stomach, as it can induce vomiting or provide additional fibre for digestion. Although less than 25% of dogs vomit after eating grass, some dogs may still find relief from an upset stomach by introducing roughage into their diet.

You should monitor your dog's grass-eating behaviour and overall health to ensure they're not experiencing any adverse effects from this habit. If your dog is frequently ill after eating grass, consult your veterinarian to rule out any underlying health issues.

Risks and Dangers

Despite the potential benefits of grass-eating, there are risks and dangers associated with this behaviour. When consuming grass, dogs may be exposed to harmful substances, such as pesticides, herbicides, and fertilisers. Grass contaminated with other animals' faecal material could also lead to dog illness.

Allergic reactions to grass or chemicals used to treat it are also possible, resulting in symptoms such as itching, sneezing, and difficulty breathing. To ensure your dog's safety, monitor their grass-eating behaviour and be aware of any unusual symptoms that may follow.

Addressing Grass Eating Behaviour

Addressing grass-eating behaviour in dogs can involve a combination of diet improvement, mental and physical stimulation, and the provision of safe alternatives to grass. By understanding the reasons behind your dog's desire to consume grass and taking steps to address these underlying factors, you can help maintain their overall health and well-being.

It is important to note that grass-eating is a normal behaviour for dogs, and in most cases, it is not a cause for concern, however, if your dog is eating large amounts of grass or is exhibiting other signs of distress.

Diet Improvement

Ensuring your dog has a well-balanced diet with adequate fibre and nutrients can help reduce their desire to eat grass. Consider incorporating vegetables such as broccoli, carrots, and green beans into your dog's diet to help diminish grass consumption and supplement their fibre intake.

If your dog continues to consume grass, consult your veterinarian about potential changes to their diet. They can help you identify nutritional deficiencies and recommend appropriate dietary adjustments for your dog's needs.

Mental and Physical Stimulation

Kong Rewards Shell, Kong, Small

Providing mental and physical stimulation through play, exercise, and socialisation can help alleviate boredom and anxiety that may lead to grass-eating. Engage your dog in activities such as food-containing puzzle toys, scent work, and cognitive games to keep their mind active and occupied.

Safe Alternatives

Offering safe alternatives, such as homegrown grass or dog-friendly plants, can satisfy your dog's desire to graze without exposing them to harmful substances like pesticides or parasites. Consider providing your dog with a designated play area in your garden, ensuring it's free of chemical agents and safe to explore.

Introducing safe alternatives to grass eating can help provide your dog with the necessary nutrients and minimise the risk of ingesting hazardous substances. Monitor your dog's grass-eating habits and adjust their diet and environment to ensure their health and well-being.

When to Consult Your Veterinarian

It's essential to consult your veterinarian if your dog shows signs of excessive grass eating or unusual symptoms after consuming grass. Your veterinarian can help identify any underlying health issues or dietary deficiencies and provide the necessary care to ensure your dog's health and well-being.

It is important to remember that grass-eating is a normal behaviour for dogs, and in most cases, it is not a cause for concern. However, if your dog is exhibiting excessive grass eating or any other behaviour, or if your dog is showing excessive grass eating or any other behaviour.

Excessive Grass Eating

Excessive grass eating or consuming too much grass may indicate an underlying health issue or dietary deficiency that requires professional attention if your canine companion is displaying a propensity for eating grass excessively, in addition to exhibiting other symptoms such as decreased appetite, lethargy, diarrhoea, or constipation. In that case, it is recommended to seek medical attention from a veterinarian.

Enhancing your canine's nutrition, providing mental and physical stimulation, and providing secure alternatives to grass are all potential solutions to address excessive grass eating. If your dog's symptoms persist, consult your veterinarian for further guidance.


In conclusion, dogs eat grass for various reasons, including instinct, dietary deficiencies, and enjoyment of taste and texture. Age and breed can play a role in grass-eating behaviour, with younger dogs being more likely to eat grass and certain breeds being more prone to the behaviour. Grass eating can have positive and negative health implications for dogs, and it's essential to address this behaviour appropriately to ensure your dog's overall health and well-being.

By understanding the reasons behind your dog's grass-eating habits and taking steps to address these underlying factors, you can help maintain their health and happiness. Always consult your veterinarian if your dog exhibits excessive grass eating or unusual symptoms after consuming grass.


Frequently Asked Questions:

Dog wearing glassed with lots of question mark signs around him

Should I stop my dog from eating grass?

Based on the available evidence, occasional grass-eating by dogs is generally harmless. Therefore, if your pet is healthy and regularly wormed, it's probably safe to let them indulge in this behaviour.

What does it mean when my dog is eating grass?

Your dog is likely eating grass to help settle their stomach, as grass contains essential vitamins and nutrients that may benefit digestion.

However, if they continue to eat grass excessively, it might be wise to consult a veterinarian.

Do dogs eat grass to settle their stomach?

It is widely believed that dogs consume grass to aid digestion and settle their upset stomachs. This belief comes from the fact that grass contains fibre, which helps soothe stomach issues and lower the stomach's pH.

Do dogs eat grass when they are sick?

It is commonly assumed that dogs eat grass to soothe an upset stomach. However, recent research shows otherwise. A 2007 dog owner study found no correlation between eating grass and vomiting or feeling sick. Thus, it is unlikely that dogs eat grass when they are sick.

Why do dogs eat grass?

Although the exact reasons why dogs eat grass are unclear, it could be a natural behaviour, in response to dietary deficiencies, or to satisfy their curiosity.

It is believed that dogs may eat grass to help them vomit if they have an upset stomach or to help them pass on indigestible items. They may also eat grass to supplement their diet with vitamins and minerals or to help them cope.

Leave a comment

Please note: comments must be approved before they are published.