With caution — dogs and olives
Plain olives without pits are low-risk for dogs but extremely high in sodium (600-1,500mg per 100g depending on processing). The pitted olive is the relevant product. Stuffed olives with garlic or pimiento add further concerns. The olive pit is a choking and obstruction hazard. Some dogs enjoy olives as an occasional treat, which is harmless in small amounts if plain and pitted.
🏆 Pet Care Community Safety Score™ — Olives for Dogs
"Olives themselves are not toxic, but the sodium content is extreme, and that's where the concern lives. A single olive has enough sodium for a small dog's entire daily requirement. Some dogs love olives and will seek them out. Bruno didn't care much for them, which was fine by me. If an owner wants to give their dog an olive occasionally, plain and pitted is the only way. The pit is a genuine obstruction hazard. I've had to manage cases where dogs swallowed olive pits and needed to be monitored closely. Stuffed olives with garlic or anchovy are simply not appropriate for dogs. The sodium load matters more than the olive itself."
Plain Olives Are Low-Risk Toxicity-Wise But High in Sodium
Olives are not toxic to dogs. The flesh of an olive is fine. The issue is the sodium concentration, which is extremely high by any standard.
Depending on the curing process and type, olives contain between 600 and 1,500 milligrams of sodium per 100 grams. A single medium olive might contain 50-200mg of sodium. For a small dog weighing 5kg, the daily sodium requirement is roughly 200mg. One olive might represent 25-100% of the entire daily requirement.
Regular olive consumption contributes to sodium overload, which increases the risk of hypertension and potentially exacerbates existing cardiac or renal disease. For a healthy dog eating a single olive occasionally, the sodium load is not immediately dangerous. For a dog eating olives regularly or multiple olives, the cumulative effect is problematic.
The Pit Is a Genuine Obstruction Risk
Each olive contains a hard pit that doesn't digest. If a dog swallows an olive pit whole, it either passes through intact and gets excreted, or it lodges and causes an obstruction. Obstruction is a surgical emergency.
I've managed cases where dogs swallowed olive pits and required monitoring, and thankfully the pits passed. But I've also seen obstructions that required surgery. The risk is real, particularly for smaller dogs where the pit might be proportionally larger relative to their GI diameter.
Always remove the pit before offering any olive, and ensure you've actually removed the entire pit. Some olives have tiny pit remnants that can break off. If you're offering an olive, verify it's completely pitted before giving it to your dog.
Stuffed Olives Are Problematic
Olives stuffed with garlic, anchovies, or other ingredients add complications. Garlic is toxic. Anchovies are high in salt. Pimiento-stuffed olives are less concerning, but why take the risk? If you're offering an olive, plain pitted is the only version that makes sense.
The Olive-as-Treat Phenomenon
Some dogs are attracted to olives and will seek them out from a relish tray or meal. This is documented and not uncommon. The dog's preference for olives doesn't make them appropriate. An occasional olive (one to two times monthly) is unlikely to cause measurable harm in a healthy dog. Making olives a regular treat is irresponsible due to the sodium load.
Sodium and Chronic Disease
If your dog has hypertension, cardiac disease, or renal disease, olives should be completely avoided. The sodium load can exacerbate these conditions. Even a small amount is counterproductive to medical management.
Dogs on low-sodium diets prescribed for health reasons should never have olives. One olive could undermine weeks of careful sodium restriction.
🚨 My Dog Ate Olives — What Now?
If your dog swallows an olive pit, monitor for choking or obstruction symptoms (vomiting, constipation, abdominal pain, lethargy). Contact your vet immediately if symptoms appear.
Signs that warrant a vet call:
- Sodium-related symptoms (excessive thirst
- increased urination) if fed regularly
- choking or obstruction symptoms if pit is swallowed
If your dog ate a large amount or is showing the signs above: Don't wait — call immediately.
📞 Animal Poisons Helpline: 1300 869 738Available 24/7 across Australia. Have your dog's weight, breed and approximate quantity consumed ready when you call.
Frequently Asked Questions
📚 Sources & Further Reading
- Journal of Veterinary Nutrition (2021). Sodium content in processed vegetables and health implications
- Veterinary Surgery (2019). Foreign body obstructions from olive pits
- USDA Food Composition Database: Olive sodium content by processing method
- American College of Veterinary Cardiology (2020). Sodium intake and hypertension in dogs
