You’re out on a walk or letting your dog roam the backyard when suddenly, they start munching on grass like it’s a gourmet salad. But why? Are they hungry? Sick? Trying to tell you something?
Dogs eating grass is one of the most common (and puzzling) behaviors that leave dog owners scratching their heads. The truth is, there’s no single answer—it could be completely normal, or it could be a sign of something more.
Let’s dig into the real reasons your dog might be turning your lawn into a buffet and whether or not you should be concerned.
Dogs may be domesticated, but they still have wild instincts. In the wild, wolves and other canines eat plant material, including grass, berries, and even tree bark. It’s possible that some dogs eat grass simply because it’s a natural part of their scavenging behavior.
Does this mean your dog is turning into a wolf? Nope, but it does mean that eating grass could just be an old habit hardwired into their DNA.
Ever notice how some dogs just seem to love chewing on things? Grass has a unique texture and, depending on the season, can be fresh, soft, or slightly crunchy. Some dogs may simply enjoy the taste and mouthfeel of grass.
Just like some dogs love chomping on ice cubes, others might find chewing on grass satisfying—even if they don’t actually swallow it.
One of the most common myths is that dogs eat grass to make themselves throw up when they have an upset stomach. While this is sometimes true, studies have shown that less than 25% of dogs vomit after eating grass—meaning most dogs eat it without feeling sick at all.
However, if your dog suddenly starts eating grass excessively and vomiting afterward, it could be a sign of:
Mild stomach upset
Gastrointestinal discomfort
Acid reflux
If it happens frequently, a visit to the vet might be a good idea to rule out digestive issues.
Another theory is that dogs eat grass because they’re missing certain nutrients or fiber in their diet. While this is possible, most high-quality dog foods provide complete and balanced nutrition.
However, if your dog is eating a lot of grass and has other signs of nutritional deficiency (like weight loss, a dull coat, or unusual behavior), talk to your vet about whether they need more fiber or dietary adjustments.
Add plain pumpkin puree (not pie filling) to their meals.
Offer fiber-rich veggies like carrots, green beans, or sweet potatoes.
Try a dog food with a higher fiber content.
Dogs sometimes eat grass simply because they have nothing better to do. If your dog isn’t getting enough mental or physical stimulation, they might turn to grazing as a way to entertain themselves.
They only do it when they’re alone or in the backyard for long periods.
They don’t seem to have any digestive issues or dietary concerns.
They perk up and stop when you engage them in play or offer a toy.
Solution: Increase your dog’s exercise, playtime, and mental stimulation with toys, puzzles, and training sessions.
Just like some people bite their nails or chew gum when they’re anxious, dogs may eat grass as a coping mechanism. Stress, anxiety, or even a change in routine can trigger grass-eating as a way for your dog to self-soothe.
Moving to a new home
A new pet or family member
Separation anxiety
Loud noises (thunderstorms, fireworks)
If anxiety is the cause, helping your dog feel more secure with consistent routines, calming treats, or anxiety-relief products can help.
In most cases, eating grass is harmless. However, there are a few things to watch out for:
If the grass has been treated with pesticides or chemicals – Lawn fertilizers, weed killers, and pest control chemicals can be toxic. If you use any treatments on your yard, make sure they’re pet-safe.
If they’re eating too much and vomiting frequently – Occasional vomiting isn’t always a concern, but if your dog throws up regularly after eating grass, it’s time for a vet visit.
If they’re eating grass obsessively – If your dog suddenly starts eating excessive amounts of grass, it could signal an underlying issue, like digestive problems, parasites, or anxiety.
If your dog’s grass-eating is becoming a problem, here are some ways to curb the habit:
✔️ Provide more mental and physical stimulation – Walks, training, and puzzle toys can reduce boredom-based grass eating.
✔️ Offer safe, dog-friendly veggies – If they’re craving fiber, try giving them crunchy veggies like carrots or cucumbers instead.
✔️ Make sure they have a well-balanced diet – If needed, consult your vet about any potential nutritional deficiencies.
✔️ Redirect with a command – Teach a "leave it" or "come" command to break the habit when you see them going for the grass.
✔️ Supervise outdoor time – If necessary, keep an eye on your dog while outside to discourage grazing.
Most of the time, grass-eating is completely normal and isn’t a cause for concern. Dogs do it for a variety of reasons—sometimes for fun, sometimes out of boredom, and occasionally because their stomachs need a little relief.
If your dog eats grass occasionally and seems healthy, there’s no need to panic. But if it’s excessive, leads to vomiting, or seems obsessive, a trip to the vet can help rule out any underlying issues.
So, next time your dog snacks on the lawn, you’ll know—it’s not just weird dog behavior. It’s instinct, curiosity, or maybe just their way of adding a little ruff-age to their diet. 😉