✓ Reviewed against PDSA, Blue Cross & Animal PoisonLine guidance · Last reviewed: 2026-07
Can dogs eat olives?
The full picture
Olives themselves — the flesh — aren't toxic to dogs. The problems are the salt, the pit, and the preparations they come in. Olive brine contains enormous amounts of sodium. Pits are choking and blockage hazards. Stuffed olives contain anchovies, garlic, blue cheese, or chilli depending on the type. Tapenade and olive spread are also salty and often contain garlic. Plain olive oil in tiny amounts is fine and sometimes used as a coat supplement — but not needed.
If your dog ate more than a safe amount
Plain unsalted olives are safe in small amounts. Brined olives (most jar olives) are too salty for dogs. Olive pips are a choking hazard.
Risks to watch for
- High salt
- Pits are choking/blockage risk
- Stuffed versions often have toxic fillings
- Brine is dangerous
Safe portion size
A single pitted plain olive occasionally at most.
And while you're thinking about what's good for your dog, keeping on top of flea and parasite prevention is just as important as diet.
Why olive pits are more dangerous than they look
An olive pit poses two separate risks, not one. The first is choking — a pit is roughly the right size to lodge in a small or medium dog's throat, particularly if swallowed in a hurry while scavenging a dropped snack. The second, less obvious risk is intestinal obstruction: a swallowed pit that clears the throat can still get stuck further down the digestive tract, especially in smaller dogs, and this typically doesn't show symptoms immediately — vomiting, loss of appetite, and abdominal pain may not appear for a day or more after ingestion, by which point surgery is often the only option. Pits are also hard enough to crack a tooth if a dog chews down on one directly, which is a real but lower-stakes risk compared with the blockage danger. Always remove pits completely before offering any olive to a dog, and be alert to olives dropped on the floor at a barbecue or dinner table — a whole unpitted olive swallowed quickly is the most common real-world route to this problem.
Why brine and stuffed olives are the bigger everyday risk
In practice, sodium — not the pit — is the more common reason olives cause a problem for dogs, simply because brined and stuffed olives are far more widely available (jarred, on pizza, in antipasti, at parties) than plain pitted ones. A small handful of brined olives can contain a genuinely significant amount of sodium for a dog's body weight, and excessive salt intake in dogs can cause vomiting, diarrhoea, excessive thirst and urination, and in severe cases (usually requiring a much larger dose than a dog would realistically get from olives alone) sodium ion poisoning — tremors, seizures, and worse. Olives eaten straight from a jar of brine, rather than drained and rinsed, carry proportionally more salt than the same olives served plain.
Stuffed olives compound the risk further depending on the filling: garlic-stuffed olives introduce allium toxicity on top of the salt; blue-cheese-stuffed olives add fat and, for dogs sensitive to it, dairy; anchovy-stuffed olives add more sodium again. Treat any stuffed or flavoured olive as off-limits, not just a saltier version of a plain one — the filling itself may be independently unsafe.
Green vs black olives — is either safer?
The colour difference between green and black table olives comes down to ripeness (green olives are picked unripe, black olives are left to ripen on the tree or are treated to darken) rather than any meaningful difference in toxicity — neither is inherently safer for a dog than the other. What matters far more than colour is preparation: both green and black olives are typically cured in brine or oil regardless of colour, so the same salt and pit cautions apply equally to both.
Tapenade, olive oil and Mediterranean dishes
Tapenade — the blended olive spread common in Mediterranean cooking — combines the salt concern with garlic, anchovies, and sometimes capers, all in a form that's easy for a dog to lick straight off a plate or serving dish. Treat any amount of tapenade the same as a stuffed olive: off-limits, not a smaller-portion version of plain olives.
Plain, unflavoured olive oil in genuinely small amounts (a few drops mixed into food, not a poured serving) is different from the olive itself and is sometimes used as a coat-condition supplement — but it isn't a necessary addition to a balanced dog diet, and too much of any oil, including olive oil, can cause the same digestive upset or pancreatitis risk associated with excess dietary fat generally. There's no meaningful benefit to giving olive oil beyond what a dog would already get from a properly balanced commercial diet.