Dog parents like me have likely observed their pups grazing on grass at some point, leaving many to wonder why dogs engage in this behavior. While it may seem peculiar, dogs eating grass is a common behavior, and researchers and veterinarians have proposed several explanations for this quirky habit.

Reasons Why Dogs Eat Grass:

  • Digestive Aid:  One theory suggests that dogs eat grass as a means to induce vomiting. In the wild, dogs may consume plant material to help purge indigestible matter from their stomachs. Grass, with its fibrous texture, may act as an irritant and trigger vomiting, in order to remove unwanted substances.
  • Nutritional Deficiency:  Some experts propose that dogs may eat grass due to nutritional deficiencies in their diets. If a dog lacks certain vitamins  or minerals, they might instinctively seek out alternative sources in the form of vegetation. However, it’s crucial to note that modern dog diets are carefully formulated to meet nutritional requirements, making this explanation less likely.
  • Instinctual Behavior:  Eating grass could be an instinctual behavior inherited from the dog’s wild ancestors. Wolves and other wild canines have been observed eating plants.  This behavior may have been carried on to domesticated dogs.

  • Boredom or Anxiety: Dogs, like humans, can resort to certain behaviors out of boredom or anxiety. If a dog is left alone for extended periods of time and lacks mental control, it may turn to eating grass as a form of entertainment or self-soothing.

  • Taste and Texture: Some dogs simply enjoy the taste or texture of grass. Dogs use their mouths to explore the world, and the different textures of grass may be appealing to them. This is especially true for puppies, who are known to explore the world through mouthing.

  • Natural Laxative: Grass contains a significant amount of fiber, and ingesting it may act as a natural laxative for dogs. In some cases, dogs may consume grass to help alleviate constipation or other digestive issues.

Is Eating Grass Bad for Dogs?

The act of eating grass itself is not inherently harmful to dogs. In fact, many dogs consume grass without experiencing any adverse effects. However, there are concerns about the potential ingestion of pesticides or chemicals present on the grass, which could be harmful to dogs.

Effects of Eating Grass on Dogs:

While most dogs can tolerate eating grass without consequences, there is a risk of gastrointestinal upset if the grass is treated with chemicals. Signs of distress may include vomiting, diarrhea, or lethargy.

How Can I Stop My Dog from Eating Grass?

If you’re concerned about your dog’s grass-eating habits, consider these strategies:

  • Ensure a Balanced Diet: Make sure your dog is on a well-balanced diet to address any potential nutritional deficiencies.

  • Provide Mental and Physical structured activities : Engage your dog in regular structured activities where he or she has to practice self control. This way your dog will be tired and  content instead of getting restless, bored and anxiuos. Note that unstructured games or activities can lead to restlessness and more anxiety. 

  • Choose Safe Grass Areas: If your dog enjoys grazing, ensure they do so in areas free of pesticides or harmful chemicals.

Is Eating Grass Instinctual or a Psychological/Physical Need?

While the exact reason dogs eat grass remains a subject of debate, it likely involves a combination of instinctual behavior, exploration, and potential physical or psychological needs. Dogs may eat grass for various reasons, and the motivation behind this behavior can vary from one individual to another.

When Should I Call the Vet?

If your dog exhibits signs of distress such as persistent vomiting, diarrhea, lethargy, or if you suspect they have ingested toxic substances from the grass, it’s crucial to contact your veterinarian promptly. A professional can assess the situation and provide appropriate guidance based on your dog’s specific circumstances.

While grass consumption is a common behavior in dogs, understanding the underlying reasons can help pet owners make informed decisions about their dog’s well-being. Monitoring the environment, ensuring a balanced diet, and seeking veterinary advice when necessary are key components of responsible dog ownership.

© Gabriel Riesco, Pawmos Dog Training LLC |   All Rights Reserved December 2023