DOGS are known for their curious behaviors, and one that often leaves owners scratching their heads is the tendency to nibble on grass. It’s a common sight—your furry friend happily munching away on the green blades in the backyard. While the act might seem perplexing, several theories attempt to explain why dogs eat grass.
Related: Best Grass for Dogs
The 7 Reasons Why Dogs Eat Grass

Believe it or not, dogs eat grass because of upset stomachs, as a dietary supplement, boredom, and anxiety, or because they want to explore different tastes.
But there are more than these few reasons. Read further.
1. Natural Instincts
Dogs have a long history of cohabitating with humans, but their roots as scavengers and hunters still linger.
In the wild, canines had a more varied diet, which sometimes included plant matter.
Chewing on grass might be a manifestation of this instinctual behavior, a genetic echo from their ancestors.
2. Dietary Supplement
Contrary to the belief that dogs eat only meat, they are, in fact, omnivores. While commercial dog food aims to provide a balanced diet, some dogs might crave additional nutrients.
Grass could act as a natural dietary supplement, offering vitamins or minerals that might be lacking in their regular meals.
3. Upset Stomach Remedy
The idea that dogs consume grass to induce vomiting isn’t universally accepted.
However, some experts suggest that when dogs have an upset stomach, they may instinctively turn to grass as a way to help themselves feel better.
It’s a sort of self-medication, although the mechanisms behind it are not entirely clear.
4. Exploration and Taste
Dogs, much like toddlers, explore the world with their mouths. The taste and texture of grass might simply be appealing to some dogs.
It could be a sensory experience—a way for them to interact with and understand their environment.
5. Boredom and Anxiety
Dogs left alone or under-stimulated may resort to behaviors like chewing on the grass out of boredom or anxiety.
Providing ample physical and mental stimulation can help curb such habits and keep your pet engaged in more constructive activities.
6. Evolutionary Adaptation
Over centuries of domestication, dogs might have developed the ability to consume a wider variety of foods, including plant material.
This adaptability could explain why dogs, unlike their wolf ancestors, show a penchant for the occasional green snack.
7. Genetic Predisposition
Some dogs seem to have a genetic predisposition to eating grass.
Certain breeds or individual dogs may exhibit this behavior more frequently, indicating a possible genetic component.
For more about grass for dogs, check these articles.
My Final Thoughts on Why Dogs Eat Grass
Understanding why your dog engages in grass-eating behavior requires a holistic approach. Observing their overall health, diet, and behavior patterns can provide valuable insights.
While occasional grass nibbling is generally considered normal, excessive, or sudden changes in this behavior should prompt a visit to the veterinarian.
It’s crucial to rule out any underlying health issues and ensure that your furry companion leads a happy and healthy life.
In conclusion, the act of dogs eating grass remains a fascinating and somewhat enigmatic aspect of canine behavior.
As devoted pet owners, our role is to observe, understand, and ensure that our dogs receive the care and attention they need to thrive in our human-centric world.