Can Dogs Eat Marshmallows? What Pet Parents Need to Know

No, dogs cannot eat marshmallows. While generally speaking, if your dog sneaks a marshmallow or two, they should be fine, some serious health concerns can stem from your dog eating too much of the sugary confection. That means that the answer to “Can dogs eat marshmallows?” is most often “No.” As always, please consult your veterinarian before adding new foods to your dog’s diet to ensure it’s an appropriate snack for your pet. If you notice your pup has an adverse reaction to marshmallows containing xylitol, contact animal poison control immediately.

Even if your regular brand of marshmallows doesn’t contain xylitol, they’re still not going to be a wholesome snack for your pup. The ingredients they’re made of offer almost no nutritional value to dogs or humans. The canine digestive system is especially unsuited to marshmallows, meaning even a couple can cause gastrointestinal issues for your pup. Worse yet, more and more marshmallows are being sweetened with artificial sweeteners such as xylitol which is toxic to dogs. This even applies to queries like “Can dogs eat jet puffed marshmallows?” and “Can dogs eat mini marshmallows?”

Why Are Marshmallows Bad for Dogs?

There is no health benefit from feeding marshmallows to dogs. Most marshmallows are made from sugar, corn syrup and gelatin—all ingredients that aren’t great for humans and even worse for dogs.

While they can derive nutrients from vegetables and grains, dogs are mostly carnivores, and this means that most of the nutrition they need to remain active and happy comes from eating animal products. Sweeteners—including sugar—are going to result in extra unnecessary calories and potential cavities for your dog. They may not be able to fully digest all the ingredients in marshmallows either.

To put it plainly, their digestive systems aren’t suited to ingesting the amount of sugar that comes with each marshmallow. Even a couple of marshmallows run the risk of causing gastrointestinal distress for your dog, such as diarrhea, vomiting and constipation. The additional sugar in their diet can lead to obesity, diabetes, and a significantly shortened life span in the long run.

Marshmallows are derived from the sap of the mallow plant that is combined with sugar. However, parts of the mallow also have holistic benefits for humans—and some argue, for canines. One of the primary uses of the mallow root is a treatment for coughs and a sore throat. This can lead to questions like “Can dogs eat marshmallow pills?” and “Can dogs eat marshmallows for coughs?”

Mallow root is generally harmless to dogs, but there is not a lot of confirmation on this or its health benefits in canines. It’s highly recommended to consult your veterinarian first to ensure it’s okay for your pet.

What Happens if Dogs Eat Marshmallows?

If your pup manages to eat a couple of marshmallows that have fallen on the floor—and they don’t contain xylitol—your pet should be fine. However, suppose your dog managed to get into a whole bag and has a bad reaction to marshmallows. In that case, they will likely exhibit signs of gastrointestinal distress, including vomiting, lack of appetite and diarrhea. If they’ve ingested marshmallows containing xylitol, your canine companion could exhibit the above symptoms, as well as a stumbling walk, troubling seizures and even a coma.

Can dogs eat marshmallows without getting sick? Yes, it’s entirely possible—in fact likely—that a couple of marshmallows will have no real negative effects on your dog, but the possibility is always there, and it’s not a risk worth taking.

What To Do If Your Dog Ate Marshmallows

If your pet has eaten just a few marshmallows that didn’t contain xylitol, you’re likely fine just monitoring them for signs of gastrointestinal distress. If vomiting and diarrhea worsen, if your pup managed to consume a whole bag of marshmallows or if any of the marshmallows contained the sweetener xylitol, you should contact animal poison control or your veterinarian immediately. The answer to “Can dogs eat marshmallows?” can vary when it comes to canine health, so consulting your vet to be on the cautious side is highly recommended.

How To Prevent Your Dog from Eating Marshmallows

It’s unlikely that you’re sharing a cup of warm cocoa and marshmallows with your pup—so the most likely scenario in which your dog is eating enough of this sugary food to become sick is if it is being left out around the house.

Make sure not to leave bags of marshmallows or jars of whipped marshmallows unattended on counters where dogs can grab them. They’re also better stored on high shelves or sealed in chew-proof containers. If you have kids who love this confectionary treat, be sure to stress the importance of keeping it away from their pets.

Frequently Asked Questions

Are marshmallows toxic to dogs? Regular marshmallows made with sugar, corn syrup and gelatin are not acutely toxic to dogs in very small amounts, but they offer zero nutritional value and can cause gastrointestinal distress. The real danger comes from marshmallows sweetened with xylitol, an artificial sweetener that is genuinely toxic to dogs and can cause seizures, liver failure and coma even in small quantities. If you suspect your dog has eaten anything containing xylitol, contact the ASPCA Animal Poison Control Center immediately. https://www.aspca.org/pet-care/animal-poison-control

What if my dog ate a whole bag of marshmallows? A couple of plain, xylitol-free marshmallows are unlikely to cause serious harm, but a large quantity is a different story. Eating a whole bag can trigger significant gastrointestinal distress — vomiting, diarrhea and loss of appetite — and delivers a heavy sugar load that strains your dog's digestive system, which is simply not suited to processing that much sugar at once. Contact your veterinarian or the ASPCA Animal Poison Control Center right away if your dog consumed a large amount or if you cannot confirm the marshmallows were xylitol-free. https://www.aspca.org/pet-care/animal-poison-control

Can dogs eat mini marshmallows or Jet-Puffed marshmallows? Size does not make marshmallows safer. Mini marshmallows and standard Jet-Puffed marshmallows carry the same concerns: excess sugar, no meaningful nutritional value for dogs and the ever-present risk that the formula contains xylitol. Always check the ingredient label before assuming any marshmallow variety is harmless, and when in doubt, keep them out of your dog's reach entirely. https://www.aspca.org/pet-care/animal-poison-control

Can dogs eat marshmallows for a cough or sore throat? Some pet parents have heard that marshmallow root — the plant from which traditional marshmallows were originally derived — may have soothing properties. However, commercial marshmallows contain virtually none of the actual mallow plant; they are primarily sugar and corn syrup. Even if mallow root is generally considered low-risk for dogs, there is insufficient evidence to support using it as a canine remedy, and any dosing or treatment decision should be made by your veterinarian, not a bag of candy. https://sites.tufts.edu/petfoodology/

What are safe, dog-friendly alternatives to marshmallows? If you want to give your dog a sweet treat, whole foods like a small slice of plain banana, a few blueberries or a thin piece of watermelon (seedless, no rind) are far better choices. Dogs are omnivores and can derive nutrients from certain fruits and vegetables, but treats of any kind should make up no more than 10% of your dog's daily caloric intake. Always introduce new foods gradually and consult your veterinarian if you are unsure what is appropriate for your individual dog. https://www.merckvetmanual.com/management-and-nutrition/nutrition-small-animals/nutritional-requirements-of-small-animals https://wsava.org/global-guidelines/global-nutrition-guidelines/

How do I keep my dog away from marshmallows at home? Prevention is straightforward: store marshmallows and marshmallow-based products — including hot cocoa kits and s'mores supplies — on high shelves or in sealed, chew-proof containers. Never leave open bags unattended on counters. If you have children in the household, make sure they understand that foods safe for humans are not always safe for dogs, and that sharing this particular snack with the family dog is off-limits.

This article was created with assistance from AI tools and reviewed for accuracy by Petco's content team.