Can cats eat olives?
Safe in moderationA tiny piece of plain, pitted, unsalted olive will not hurt most cats, but olives offer them no real benefit and salty ones are a problem.
Reviewed by the Webvet Veterinarian Team · Last reviewed June 26, 2026
Can Cats Eat Olives?
A tiny piece of plain, pitted, unsalted olive will not hurt most cats, but olives offer them nothing nutritionally and the salty, brined, or seasoned olives most of us actually eat can make a cat sick. Cats are obligate carnivores, which means their bodies are built to run on meat, so an olive is at most a rare novelty rather than a real treat. If your cat seems oddly obsessed with olives, that fascination is a harmless quirk tied to a catnip-like compound, not a sign they are missing something in their diet. The safe answer is simple: a small plain fragment on rare occasions is fine, and anything salty, pitted, or seasoned is best kept out of reach.
- 1A small piece of plain, pitted, unsalted olive is non-toxic to cats and unlikely to cause harm.
- 2Olives give cats zero nutritional benefit because cats are obligate carnivores.
- 3Brined, marinated, and stuffed olives are the real danger due to high salt and possible garlic or onion.
- 4Always remove the pit, which is a choking and intestinal blockage hazard for a small cat.
- 5Some cats react to olives like catnip, which is a harmless behavioral quirk, not a craving to satisfy.
Treats should stay under 10% of your cat's daily calories. Smalls makes the rest, built around the meat an obligate carnivore actually needs.
- Human-grade ingredients, protein first
- Built for obligate carnivores
- Fresh meals delivered to your door
Webvet may earn a commission when you click through to Smalls, at no extra cost to you.
Are Olives Safe for Cats?
Plain olive flesh is not toxic to cats. The olive itself contains no compound that poisons a cat the way onions, garlic, or grapes do, so a lick or a nibble of a plain olive is not an emergency. The problem is that olives are almost never sold plain. The green and black olives in your fridge have usually been cured in a salty brine, packed with vinegar, or stuffed with pimento, garlic, blue cheese, or jalapeno, and those additions are exactly where the risk comes from. Cats have very small bodies, roughly eight to ten pounds for an average adult, so a level of salt that would barely register for a person can be a meaningful dose for a cat.
Freeze-dried wild salmon for cats, one ingredient. The meat-first treat a carnivore is actually built for.
Webvet may earn a commission when you click through to Chewy, at no extra cost to you.
It also helps to remember why olives sit so far down the list of good cat snacks in the first place. As obligate carnivores, cats draw their energy and essential nutrients such as taurine, arachidonic acid, and preformed vitamin A from animal tissue. They cannot even taste sweetness, and they get little to no benefit from the fats, fiber, or antioxidants that make olives appealing in a human diet. So while a plain olive is technically safe, it is filling a slot in your cat's day that a bit of meat would fill far better. Think of an olive as a harmless curiosity you allow now and then, not as a treat you offer on purpose for its nutrition.
Why Do Cats Go Crazy for Olives?
If you have ever dropped an olive and watched your cat rub against it, drool, roll around, or paw at the jar, you have seen one of the internet's favorite cat quirks in action. Olives, especially green ones, contain isoprenoid compounds that are chemically similar to nepetalactone, the active ingredient in catnip. For cats that are sensitive to catnip, an olive can trigger the same brief, euphoric, slightly goofy response, complete with rubbing, licking, and rolling. It is the smell that does it, not the taste, which is why some cats get excited by an olive without actually wanting to eat much of it.
This reaction is harmless in itself. It is a behavioral response, not a drug that damages your cat, and it wears off within a few minutes just like a catnip session. The catch is that the excitement can push a cat to lick or bite at olives that are heavily salted or sitting in brine, which is where a fun quirk turns into a health risk. So it is perfectly fine to let a catnip-sensitive cat enjoy the smell of a plain olive, but the salty, seasoned ones should be admired from a safe distance and cleared away before your cat helps themselves.
The Real Risks of Olives for Cats
The biggest hazard is salt. Brined and marinated olives can be extraordinarily high in sodium, and a cat's small body handles far less salt than ours before it becomes a problem. A single very salty olive is unlikely to cause salt poisoning, but repeated salty treats, or a cat that laps up olive brine, can lead to excessive thirst, vomiting, diarrhea, and in serious cases the tremors and disorientation of true sodium toxicity. Cats with heart or kidney disease are especially vulnerable, because extra sodium makes those conditions worse.
Whole freeze-dried minnows, a single ingredient most cats find irresistible. Pure protein, zero filler.
Webvet may earn a commission when you click through to Chewy, at no extra cost to you.
The pit is the second major concern. An olive pit is hard and round, roughly the size of a cat's throat, so it can lodge in the airway and choke a cat or pass into the gut and cause an intestinal blockage that needs surgery. Fat is a third issue: olives are relatively high in fat for their size, and too much fatty food can trigger vomiting, diarrhea, or a painful bout of pancreatitis in sensitive cats. Finally, watch the seasonings. Olives stuffed with or marinated alongside garlic and onion are genuinely dangerous, because alliums damage a cat's red blood cells and cats are even more sensitive to them than dogs. Blue cheese, chili, and heavy oil all add their own problems on top.
| Type of olive | Safe for cats? | Why |
|---|---|---|
| Plain, pitted, unsalted | Rarely, a tiny piece | Non-toxic but offers no real nutrition |
| Brined or canned in salt water | No | Very high sodium for a small cat |
| Garlic or onion stuffed | No | Alliums damage feline red blood cells |
| Whole olive with pit | No | Choking and intestinal blockage risk |
| Olive brine or juice | No | Concentrated salt that can cause toxicity |
How Much Olive Can a Cat Have?
If you decide to indulge a curious cat, keep the portion truly tiny: a small piece of a plain, pitted, unsalted olive, far less than a whole one, and only on rare occasions. There is no daily amount to aim for, because your cat does not need olives at all, so the right frequency is best described as an occasional novelty rather than a regular snack. Treats of any kind, olives included, should stay under about ten percent of your cat's daily calories, with the other ninety percent coming from a complete and balanced cat food.
Preparation matters as much as portion size. Choose a plain olive with no salt, brine, or stuffing, rinse it well to wash off any surface salt, remove the pit completely, and cut a small piece off rather than handing over a whole olive. Introduce it the way you would any new food, offering a little and watching for any stomach upset over the next day. Kittens, senior cats, and cats with heart, kidney, or weight issues are better off skipping olives entirely, since they have the least room to spare for salt and fat.
Better Treats Than Olives for Cats
Because cats are built for meat, the best treats play to that strength. A little plain cooked chicken is a favorite for good reason: it is lean protein your cat's body actually wants, with no salt or seasoning. A small piece of plain cooked egg is another easy, protein-rich option, and a flake of plain cooked salmon or other plain white fish makes a satisfying occasional treat. A lick of plain meat baby food with no onion or garlic, or a purpose-made cat treat from the pet store, will also please your cat far more than an olive ever could.
Freeze-dried raw chicken with nothing added. A pure-meat treat fits an obligate carnivore far better than fruit or veg.
Webvet may earn a commission when you click through to Chewy, at no extra cost to you.
The common thread is that these treats are unseasoned, cooked, and meat-based, which fits a cat's carnivore biology instead of working against it. Keep the pieces small, skip the salt, butter, and spices, and remove any bones. Offered this way, a protein treat gives your cat the same little moment of joy that an olive does, without the sodium, the pit, or the seasoning risks, and with actual nutrition your cat can use.
What to Do If Your Cat Eats Olives
A nibble of plain olive is usually nothing to worry about, and most cats that steal one will be completely fine. Keep an eye on them for the next day and make sure fresh water is available, since a little extra thirst is common after any salty food. Where you do need to act is if your cat ate salty or garlic-flavored olives, drank olive brine, or swallowed a pit. In those cases watch closely for vomiting, drooling, unusual thirst, lethargy, or straining to pass stool, and contact your veterinarian promptly. If you know a pit went down or a large amount of salt was eaten, do not wait for symptoms; call your vet or a pet poison hotline for advice right away, because early action is always safer than waiting to see what happens.
Frequently Asked Questions
Why do cats love olives?
Green olives contain isoprenoid compounds that resemble nepetalactone, the chemical in catnip. Cats that are sensitive to catnip can react the same way to olives, rubbing, licking, and rolling around them. It is a harmless response to the smell and does not mean your cat needs to eat olives.
Are olives toxic to cats?
Plain olive flesh is not toxic to cats, but the way olives are usually prepared can be dangerous. High-salt brine, garlic or onion stuffing, and the hard pit are the real hazards. A plain, pitted, unsalted piece is non-toxic, while salty or seasoned olives should be kept away from your cat.
Can cats eat black olives?
A small piece of plain, pitted black olive is safe in the same way a green one is, as long as it is unsalted and free of seasoning. Canned black olives are often packed in salt water, so rinse well, remove the pit, and offer only a tiny amount on rare occasions.
Can cats eat olives in brine or olive brine?
No. Brine is essentially concentrated salt water, and even a couple of tablespoons can cause gastrointestinal upset or salt toxicity in a small cat. Keep brined and canned olives out of reach, and never let your cat lap up the liquid from the jar.
Can cats have olive oil?
A very small amount of plain olive oil is not toxic and is sometimes suggested for the odd hairball, but it is pure fat and easy to overdo, which can cause diarrhea or weight gain. Ask your veterinarian before adding any oil to your cat's food rather than offering it on your own.
Sources
Reviewed by the Webvet Veterinarian Team
General guidance based on credible veterinary sources — not a diagnosis or a substitute for your veterinarian. If your pet ate something toxic or is unwell, contact your vet or a pet poison line right away.