Dogs can eat olives, but there are important considerations. Plain, pitted olives—both black and green—are generally safe for dogs to eat in moderation. Olives are not toxic and can provide some vitamins, minerals, and healthy fats. However, olives packed in brine, with added seasonings (such as garlic, chili, or pimentos), or stuffed with other ingredients should be avoided because these can be harmful or toxic to dogs. Importantly, olive pits should always be removed, as they pose choking hazards or can cause digestive blockages. Because olives can be high in sodium, feeding them only as an occasional treat is best, especially for dogs with health issues related to sodium intake. Olive oil in small amounts is also safe and may be beneficial. In summary, dogs can eat plain, pitted olives safely in small amounts, but avoid olives with pits, seasonings, stuffing, or brine, and introduce them gradually while monitoring for any adverse reactions.