Can dogs eat marshmallows?

A standard marshmallow carries about 23 calories, almost all from sugar. A bag of 30 is nearly 700 calories. Dogs that eat a whole bag often vomit or have diarrhea. Large marshmallows are soft and sticky and can block the airway of small dogs if swallowed whole.

Mini marshmallows are less of a choking hazard but just as sugary.

Sugar-free marshmallows may be sweetened with xylitol, which can cause dangerously low blood sugar. Chocolate-coated marshmallows, marshmallow biscuits, and rocky road contain chocolate. Some flavored varieties include coffee or alcohol-based flavorings.

Check the packaging before deciding it was a harmless snack.

Toasted marshmallows are extremely hot inside and can burn a dog's mouth. Skewers and sticks used for toasting are often coated in sugar and can be swallowed, which may pierce the gut. Marshmallows floating on hot chocolate come with cocoa.

Keep skewers in a closed bag when the campfire is over.

Read the label for xylitol or chocolate and see if the bag itself was eaten. Plain marshmallows usually cause no more than an upset stomach. Offer water and watch your dog for the next day. A large dog that ate a handful of plain marshmallows will usually be fine, perhaps with a softer stool the next day. A small dog that ate a full bag is more likely to vomit, so keep a closer eye on it and call your vet if it seems unwell or keeps being sick.