Why?
It's ground peanuts, so it's concentrated fat that can cause vomiting and diarrhea and may contribute to pancreatitis. Salt, sugar and oil are often added. Some reduced-sugar or sugar-free versions contain xylitol, which is highly toxic to dogs; data in cats is more limited, but it's wise to avoid it completely. The sticky texture can also be hard for a cat to swallow.
How much?
No peanut butter, not even to hide a pill. If your cat licked a little off your finger, that's not serious in itself, but always check the label.
The risks
- Vomiting, diarrhea
- Possible pancreatitis after a large amount
- Xylitol in some versions: highly toxic to dogs
- Added salt and sugar
- Sticky texture: hard to swallow
Your cat ate some: what now?
A small lick of regular peanut butter usually isn't serious: watch for vomiting and diarrhea over 24 to 48 hours. If your cat ate a good amount, or the label lists xylitol (sometimes called birch sugar), call your vet right away.
Better options
To give a pill, use a pill treat made for cats or a bit of wet food. For a lickable reward, creamy squeeze-tube treats for cats are made for exactly that.
Common questions
Can I use peanut butter to give my cat a pill?
It's better not to. Use a pill treat made for cats or a little wet food, or ask your vet whether the medication comes in a liquid or paste form.
Is natural peanut butter safe for cats?
Without xylitol or added sugar, it's less risky, but it's still very fatty and often salted. A lick won't hurt, but it isn't a treat to give.
This information is general and does not replace advice from a veterinarian. If your cat has swallowed something toxic, call your vet or an animal poison control center right away, without waiting for symptoms.