Are all nuts toxic to cats?

Not all are classed as toxic in the way chocolate or grapes are, but none offer any benefit and several carry real risks from fat content, salt, choking or specific toxicity in the case of macadamia nuts. The safest approach is to avoid feeding nuts to cats altogether.

My cat licked a nut off my plate — should I worry?

A single lick of a plain nut is unlikely to cause serious harm, but keep an eye on your cat over the following hours for vomiting or unusual behaviour. If your cat has actually eaten a whole nut, particularly a macadamia, call your vet rather than waiting to see.

Can cats eat peanut butter?

It is better avoided. Peanut butter is high in fat and some brands, particularly reduced-sugar versions, contain sweeteners that are genuinely dangerous for pets. There is also no nutritional reason for a cat to have it.

Why do cats seem interested in nuts if they're not good for them?

Cats are often curious about new smells and textures rather than genuinely wanting to eat something for nutritional reasons. That curiosity does not mean a food is safe, which is why keeping nuts out of reach matters more than reading interest as a green light.

Are cashews or almonds worse than other nuts for cats?

There is no strong evidence that any common nut is specifically toxic to cats the way macadamia nuts are documented to be in dogs, but all nuts share the same fat, salt and choking concerns. Treating every type of nut as one to avoid is the simplest and safest approach.

Can cats eat nuts?

Cats are best kept away from nuts altogether. They are obligate carnivores with no nutritional need for nuts of any kind, several types carry genuine risks from choking to high fat and salt content, and there is no upside to feeding them deliberately, however curious your cat seems about a dropped one.

Why nuts are a poor fit for cats

A cat's digestive system is built around meat, and nuts offer nothing that fits into that. Beyond the lack of benefit, many nuts are high in fat, which can upset a cat's stomach or contribute to weight gain if given regularly, and salted or flavoured nuts add sodium a cat does not need.

Some nuts also carry specific risks worth knowing about even though the research is more established in dogs than cats — macadamia nuts in particular are treated as one to avoid entirely across species, given how seriously they can affect dogs, and there is no reason to test the theory on a cat.

The choking and blockage risk

Whole nuts, particularly larger ones like almonds or brazil nuts, are a genuine choking hazard for a cat, whose mouth and throat are far smaller than a dog's. A nut swallowed whole can also cause a blockage, which is a more serious problem than it might sound.

Nut shells are an added risk on top of the nut itself, being sharp-edged and completely indigestible. If your cat gets hold of nuts in their shells, treat it as worth watching closely rather than something to ignore.

What to watch for

If your cat has eaten a nut, particularly a larger one or a macadamia, watch for vomiting, lethargy, wobbliness or discomfort over the following hours. These signs are worth a call to your vet rather than waiting to see if they pass.

A single small accidental lick of a nut left on a plate is unlikely to cause serious harm, but repeated access or a cat who has eaten a whole nut or several is worth taking seriously rather than assuming it is fine because nothing happened immediately.

What to give instead

If your cat is drawn to the crunch of a nut, a proper cat treat gives them that texture without the risk — many are specifically designed to be crunchy and satisfying in a way that is actually built for a cat's mouth and digestion.

Keeping nuts and nut bowls out of reach entirely is the simplest way to avoid the question altogether, particularly around Christmas and other times of year when nuts are more likely to be left out at cat height.

Make treat time better

Things we stock that owners commonly reach for here. Nothing on this page depends on you buying one.

Dried Catnip & Cat Grass Leaf Treats

A tub of dried catnip and cat grass leaves to sprinkle over toys, scratchers and bedding.

From£8.99

Turkey Tail Mushroom & Probiotic Powder

A bacon-flavoured turkey tail mushroom and probiotic powder you sprinkle over food. Made to support immunity, energy and gut health, with scoop guidance for every weight from small to large pets.

£13.99

Fast UK delivery

Bugalugs Scottish Salmon Oil for Dogs & Cats 500ml

A 100% natural daily supplement rich in omega 3, 6, and 9 from high-quality Scottish salmon — supports skin, coat, joints, and brain health.

£13.99

Browse all of Can cats eat… →

Common questions

Are all nuts toxic to cats?: Not all are classed as toxic in the way chocolate or grapes are, but none offer any benefit and several carry real risks from fat content, salt, choking or specific toxicity in the case of macadamia nuts. The safest approach is to avoid feeding nuts to cats altogether.
My cat licked a nut off my plate — should I worry?: A single lick of a plain nut is unlikely to cause serious harm, but keep an eye on your cat over the following hours for vomiting or unusual behaviour. If your cat has actually eaten a whole nut, particularly a macadamia, call your vet rather than waiting to see.
Can cats eat peanut butter?: It is better avoided. Peanut butter is high in fat and some brands, particularly reduced-sugar versions, contain sweeteners that are genuinely dangerous for pets. There is also no nutritional reason for a cat to have it.
Why do cats seem interested in nuts if they're not good for them?: Cats are often curious about new smells and textures rather than genuinely wanting to eat something for nutritional reasons. That curiosity does not mean a food is safe, which is why keeping nuts out of reach matters more than reading interest as a green light.
Are cashews or almonds worse than other nuts for cats?: There is no strong evidence that any common nut is specifically toxic to cats the way macadamia nuts are documented to be in dogs, but all nuts share the same fat, salt and choking concerns. Treating every type of nut as one to avoid is the simplest and safest approach.

Sources

Written against guidance published by UK veterinary and welfare organisations. Always confirm specifics with your own vet.

Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.