Why does my dog eat grass?
- Battersea Square Vets
- Aug 7
- 2 min read

Dogs eat grass for a variety of reasons, including taste, dietary needs, and digestive issues.
It's a common behaviour, and while it's often harmless, excessive grass eating could indicate an underlying problem.
So why do they do it?!
1. Taste and Texture:
Some dogs simply enjoy the taste or texture of grass. This is more common in spring and summer when the grass is fresh and green.
2. Dietary Needs:
Dogs need fibre in their diet for healthy digestion. If their food is low in fibre, they might instinctively seek it out in grass.
In rare cases, grass eating could be a sign of a nutrient deficiency, but this is more likely if the dog also exhibits other symptoms.
3. Digestive Issues:
Upset Stomach: Dogs may eat grass to induce vomiting and relieve an upset stomach.
Parasites: Eating grass might also be an attempt to expel intestinal parasites.
4. Boredom and Other Behavioural Issues:
Boredom: If a dog is bored, they might eat grass as a form of entertainment or a way to occupy their time
Anxiety: In some cases, grass eating can be a sign of anxiety or stress.
5. Instinct:
Eating grass is an inherited behaviour from their wild ancestors.
When to be concerned:
If your dog is eating large amounts of grass or vomiting frequently after eating grass, it's best to consult your vet
If your dog is lethargic, has a loss of appetite, or is experiencing other unusual symptoms alongside grass eating, seek veterinary advice.
While grass eating is generally normal for dogs, it's important to be aware of potential reasons for the behaviour and to consult your vet if you have any concerns about your dog's health or excessive grass consumption.
Also... please be aware that grass may have had pesticides sprayed, so take care and always speak to your vet if you're at all worried.
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