Can Dogs Eat Marshmallows? Plain Ones Are Fine Once In A While, Check Sugar Free Labels

A plain marshmallow now and then will not hurt most dogs, but it is almost pure sugar, offers nothing your dog needs, and a few kinds are genuinely dangerous. The two to watch are sugar free marshmallows, which may contain xylitol, and anything with chocolate. Check the label before you share.

Are Marshmallows Toxic To Dogs?

Regular marshmallows are not toxic. They are made mostly of sugar and corn syrup, with gelatin, cornstarch, water and flavoring. A regular marshmallow weighs about 7g and has roughly 23 calories, nearly all of it sugar. A mini marshmallow is about 2 calories.

That makes a marshmallow a sugar treat, not a poison. The problems come from what else is in or on it, how much your dog eats, and how fast it goes down.

Can Dogs Eat Sugar Free Marshmallows?

Not until you have read the ingredients. Many sugar free marshmallows use sweeteners such as allulose, erythritol or maltitol, but xylitol is also used in low sugar candy, and it is toxic to dogs. In dogs, xylitol triggers a rush of insulin that can drop blood sugar dangerously, often within an hour, and larger amounts can damage the liver.

If the label lists xylitol (sometimes called birch sugar) and your dog ate some, call your vet now, or ASPCA Animal Poison Control at (888) 426-4435 or Pet Poison Helpline at (855) 764-7661 (both charge a consultation fee). Do not try to make your dog vomit unless a vet tells you to. Our xylitol guide covers the signs and where else it hides.

Marshmallow Treats, Ranked

For anything with chocolate, our chocolate guide explains how much is dangerous by type and dog size. If your dog wants a sweet potato treat this season, plain cooked sweet potato is the version that works.

The Choking Risk

This is the risk people miss. A large marshmallow is soft and sticky, and when a dog gulps it, it can squash into a plug at the back of the throat. Small dogs and dogs that inhale treats without chewing are most at risk.

If you share, give minis or tear a regular marshmallow into small pieces. Pawing at the mouth, gagging without bringing anything up, struggling to breathe or blue or gray gums are an emergency: go to the nearest vet.

How Many Marshmallows Can A Dog Eat?

Treats of all kinds should stay under 10% of your dog’s daily calories, and marshmallows have no nutrition to earn a bigger share. For a 10 lb dog, one regular marshmallow uses up roughly the whole day’s treat allowance. Treat these as a rare extra, not a habit:

To see where those calories fit in your dog’s day, check daily calorie needs by weight.

If Your Dog Ate The Whole Bag

First, check the bag. If it lists xylitol, or the marshmallows were chocolate coated, call your vet or a poison line now. If they were plain, most dogs get away with an upset stomach: vomiting, diarrhea or gas over the next day.

Also look for the bag itself. A torn or missing plastic bag can cause a blockage, and that needs a vet. A big load of sugary food can also sometimes trigger pancreatitis in dogs prone to it. Call your vet if your dog:

• Vomits repeatedly
• Has a swollen or painful belly, or stands hunched over
• Will not eat
• Seems weak or flat

For mild cases, our guide to easing an upset stomach covers home care.

The Halloween Candy Bowl

This is the time of year marshmallows end up within reach: ghost and pumpkin shaped Peeps in the candy bowl, s’mores at the fire pit, hot cocoa on the coffee table, and the sweet potato casserole coming next month. Keep candy bowls and trick or treat bags up high, and watch your dog at the fire, where a hot, sticky marshmallow on a skewer is hard for a dog to resist.

Which Dogs Should Skip It

• Diabetic dogs, since a hit of pure sugar works against blood sugar control
• Overweight dogs and dogs on a weight loss plan
• Small dogs and fast eaters, because of the choking risk
• Dogs with sensitive stomachs, a history of pancreatitis, or a prescription diet
• Puppies, who do not need the sugar and are prone to gulping

Marshmallows In Dog Food

Marshmallow is not a dog food ingredient, and our data shows it: of the 3,122 published US dog foods in our catalog, 0 list marshmallow. Gelatin, the part of a marshmallow some people point to as a health benefit, does appear in some treats and wet foods as a binder, but the amount in a marshmallow is tiny and comes wrapped in sugar. There is no good reason to feed marshmallows for the gelatin.

If your dog loves a sweet treat, a few blueberries or a slice of apple (no seeds or core) gives the same thrill with actual nutrition. Test what you know with our Safe or Never food quiz, and for anything else in the candy bowl, check the food checker.