Checked against the SaluPaws toxic-food database
Plain peanut butter is safe for dogs in moderation. But some brands are sweetened with xylitol (also listed as birch sugar or E967), which is highly toxic to dogs — and it's most common in "sugar-free" or "no added sugar" products. Check the ingredients every time, and keep portions small: peanut butter is a calorie bomb.
Before any peanut butter goes near your dog, scan the ingredients for xylitol, birch sugar, birch sap or E967. If it's there, it's off-limits — even a small amount can crash a dog's blood sugar within the hour. Our xylitol guide covers the symptoms and what to do. The safest choice: 100% peanuts, no sweeteners, no added salt.
Peanut butter is roughly 95 kcal per tablespoon. Vets recommend treats stay under 10% of daily calories. A typical 10 kg neutered adult needs about 630 kcal/day — a treat budget of ~63 kcal. That's two teaspoons of peanut butter, maximum, with no other treats that day. For a Chihuahua-sized dog, halve it. One generous spoonful in a Kong can quietly double a small dog's treat intake — work out your dog's exact budget here.
For overweight dogs, swap everyday peanut butter for lower-calorie treats like carrot sticks, and keep peanut butter for special occasions.
Log "peanut butter" in SaluPaws and it counts the calories against your dog's personalised daily target — and if you log a sugar-free product containing xylitol, the toxic-food alert warns you on the spot. Treats stop being invisible calories.
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Stay inside the 10% treat rule: about two teaspoons max for a 10 kg dog (treat budget ~63 kcal), half a teaspoon for a very small dog — assuming no other treats that day. Use the calorie calculator to get your dog's exact daily target.
Any with no xylitol (birch sugar/E967) in the ingredients — ideally 100% peanuts with no added sugar or salt. Recipes change, so check every purchase rather than trusting a brand from memory.
Either is fine for most dogs — the xylitol check and portion size matter far more than texture. Smooth is easier for lick mats and hiding tablets.
A small lick of xylitol-free peanut butter is fine for puppies over a few months old, but their calorie budgets are tiny and their diets need to stay balanced for growth — keep it to training-treat amounts.
Sources: VCA Animal Hospitals — xylitol toxicity · calorie figures are typical label values for smooth peanut butter. This page is general guidance, not a substitute for professional veterinary advice.