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Why Do Dogs Eat Grass?

Why Do Dogs Eat Grass?

Your dog is obviously not a cow, but sometimes he likes to eat like one. He’s not a herbivore and neither were his ancestors. Yet, you may have caught your dog eating grass a time or two and are wondering what’s up.

First of all, don’t worry about it too much. A lot of dogs eat grass — so many, in fact, that veterinarians typically see it as normal dog behaviour. Unless your dog has other issues or indications of a worse problem, you probably don’t have anything to worry about.

So, why do dogs eat grass?

Let’s dig in and find out!


Some people think that dogs eat grass to make themselves throw up when they feel sick. Experts don’t all agree that this is true, some argue that dogs aren’t smart enough to do this.

Regardless, most dogs who eat grass don’t seem to be sick beforehand, nor do they always throw up afterwards. While this may be a reason that some dogs eat grass — it isn’t the only one.

Additionally, they may eat grass as a way to treat intestinal worms or other intestinal problems

Dietary Needs

Sometimes dogs will eat grass because of an unmet dietary need. For example, perhaps they aren’t getting enough fibre and roughage and eating grass helps them compensate.

If your dog is consistently eating grass, you might try putting him on a high-fibre diet to see if the habit goes away. Be sure your dog is also getting enough roughage.


Does your dog spend a lot of time by himself? Dogs are social creatures and get lonely and bored when they spend a lot of time by themselves.

It is possible that dogs may spend time eating grass simply as a way to entertain themselves and pass the time. They use it as a distraction when they are feeling lonely or anxious, kind of like some humans do when they bite their nails.

If this seems to be the trouble, spending more time with your pooch may help curb the habit. Alternately, getting him a friend so that he has someone to play with even when you aren’t around may be helpful.


Finally, some dogs eat grass simply because they like to. Perhaps they enjoy the taste or the texture. It also may have some connection to their ancestry. An examination of wolves stool finds that these brothers of the domestic pup often eat grass as well.

Is Eating Grass Harmful?

The good news is that most grass eating isn’t harmful to your dog’s health. With that said, do be aware of what grass your dog is eating. Pesticides, herbicides, and fertilizers can all be hazardous to your dog so make sure that their buffet doesn’t include these chemicals.

Looking to learn more interesting facts about dog health and care? Don’t hesitate to check out more of our blog posts!

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