food
Peanut butter
NOT RECOMMENDED
Only if it is xylitol-free. Plain unsalted peanut butter is fine in small amounts, but some brands contain xylitol, which is highly toxic.
What to do
Check the label. If it contains xylitol or birch sugar, contact your vet or an emergency vet immediately.
When to contact a vet: Immediately if the peanut butter contained xylitol, or if your dog is weak, wobbly or trembling.
Symptoms to look for
- vomiting
- diarrhoea
- weakness or collapse if xylitol was present
- seizures if xylitol was present
Why
Peanut butter itself is not toxic to dogs and is widely used to hide medication or fill a lick mat. The critical check is the label: some reduced-sugar and sugar-free peanut butters contain xylitol or birch sugar, which is extremely dangerous for dogs. Peanut butter is also high in fat and salt, so it suits small amounts rather than generous servings.
- Substances of concern
- xylitol in some brands, high fat content, added salt
- Safer parts
- Plain, unsalted, xylitol-free peanut butter.
- Parts to avoid
- Any peanut butter listing xylitol or birch sugar; chocolate-coated or heavily sweetened versions.
- Preparation
- Read the ingredients every time, including when you change brand. Choose plain peanut butter with no sweeteners.
- How much matters
- A small spoonful for a medium dog as an occasional treat. Less for small dogs, and reduce it if your dog is overweight.
- Severity
- Low if xylitol-free; very high if xylitol is present
Sources
- ASPCA Animal Poison ControlPrimary authoritative — Nutrition
- PetMDVeterinary information — Nutrition
Information reviewed against recognised veterinary and animal-safety sources. Source organisations are independent of Is It For Dogs unless otherwise stated.
Last reviewed 6 September 2026 · next review due September 2027.
Safety classifications are based on available expert and veterinary information. Individual dogs may react differently, particularly dogs with allergies, existing health conditions or specific dietary requirements.
Important: Is It For Dogs provides general information about the safety of foods, plants, drinks, ingredients and other items around dogs. Our information is based on sources we consider reliable and is intended to help dog owners make informed decisions. It is not a substitute for advice from a qualified veterinary professional. Read more
Dogs can react differently depending on their size, age, health, allergies, medications, the amount consumed and other circumstances. An item classified as Safe is not necessarily suitable for every individual dog.
If your dog has eaten something potentially poisonous or dangerous, has eaten an unknown substance, or is showing concerning symptoms, contact your veterinarian or an emergency veterinary service immediately.
Do not induce vomiting or give your dog medication unless specifically instructed to do so by a veterinary professional.