| Verdict for dogs | Caution |
| Severity | 2 / 5 — Mild — usually stomach upset; watch them. |
| Safe amount | A taste at most |
| Category | Human snacks |
| Source | ASPCA Animal Poison Control — People Foods to Avoid Feeding Your Pets; VCA Animal Hospitals — pet health library · reviewed 2026-08-07 · confidence: medium |
Plain unsalted olives are not toxic, but nearly every olive you can buy is brined — high salt, which the ASPCA lists as a real problem — and stuffed olives may contain garlic. The pit can crack a tooth or block the gut.
Don't make it a habit. Watch for vomiting, diarrhea or a lost appetite over the next day and call your vet if it doesn't settle or your dog seems unwell.
Never induce vomiting and never give any medicine unless a vet tells you to — it can do more damage than the poison. What we will and won't tell you.
If you're sharing food because you want to treat them, a treat formulated for dogs does the job without the guesswork.
Affiliate link — we may earn a commission at no cost to you. It never appears on a toxic or unsafe verdict and never changes one.
Can cats eat olives? — Feed with caution to cats.
Not toxic, but be careful — olives aren't poisonous to dogs, and they come with caveats that matter. Plain unsalted olives are not toxic, but nearly every olive you can buy is brined — high salt, which the ASPCA lists as a real problem — and stuffed olives may contain garlic. The pit can crack a tooth or block the gut.
Watch for: Drinking and urinating far more than usual; Vomiting and diarrhea; Wobbliness or weakness; Tremors or seizures at high intake. Some signs lag by a day — call, don't wait.
The safe amount is a taste at most, as an occasional treat rather than a daily habit. Large amounts mainly cause stomach upset; if that doesn't settle within a day, call your vet.