Sometimes — with care
Yes, IF it’s xylitol-free. Plain peanut butter is a beloved dog treat — but xylitol-sweetened brands are extremely toxic. Always check the label first.
Plain peanut butter (just peanuts, ideally unsalted) is safe and useful: it hides pills, fills food toys and keeps dogs busy during grooming. The danger is xylitol (sometimes labelled “birch sugar” or E967), an artificial sweetener appearing in a growing number of “sugar-free” peanut butters. In dogs, even tiny amounts of xylitol trigger a massive insulin release causing life-threatening hypoglycaemia, and larger doses cause liver failure. Symptoms can start within 30 minutes.
After checking the ingredients list, ½ teaspoon for small dogs or 1 teaspoon for large dogs, a few times a week — peanut butter is nearly 600 kcal per 100 g. If you ever suspect a xylitol product was eaten, treat it as an emergency and go to the vet immediately, even before symptoms.
Plain mashed banana or pumpkin purée work in food toys with a fraction of the calories.
This article is general information, not veterinary advice. If your pet has eaten something potentially harmful or shows symptoms, contact your vet or an emergency clinic immediately. Full disclaimer.