Dogs are often seen eating grass, but when is it considered “too much grass” and a possible problem and why do dogs even do it in the first place?  

Why do dogs eat grass? 

Natural instinct 

Dogs are not strict carnivores. In the wild, they often eat plants to fulfil their dietary requirements. Grass-eating may be an instinctual behaviour passed down from their wild ancestors who had to scavenge for a balanced meal, something our pets don’t have to worry about if they’re fed high-quality. 

Gastrointestinal self-care 

Veterinarians have long speculated that dogs may turn to grass as a form of self-medication. When dogs feel unwell, they might ingest grass to induce vomiting in an attempt to remove whatever is causing discomfort from their system. 

To supplement missing nutrients  

Grass is rich in fibre and contains some enzymes that are beneficial for a dog’s digestion. It’s possible that dogs instinctively seek out grass to supplement their diet with nutrients they may be lacking or to provide additional fibre to help support an unhealthy/unwell gastrointestinal tract. 


Dogs are intelligent creatures that require mental stimulation. When they don’t get enough, they may resort to eating grass out of boredom or as a subtle nudge for their owners to engage with them. 

When does grass eating become a concern?  

While grass is generally safe for dogs, it’s crucial to ensure they are not munching on chemically treated or toxic plants. Remember to keep your garden free of toxic plants and avoid using chemicals on your lawn to keep your dog safe.

Additionally, a sudden increase in volume or frequency of grass consumption can be a sign of an underlying health issue and warrants a vet visit. If you notice any changes in your dog’s grass-eating patterns or have any concerns about their health, it’s best to consult with your veterinarian. 


 Grass-eating is a behaviour exhibited by many dogs for various reasons, from ancestral habits to seeking nutrition or even just killing time. It is usually harmless, but it is important to monitor the type and amount of grass they consume.