Is Rosemary Poisonous to Dogs?

The ASPCA classifies rosemary (Rosmarinus officinalis) as non-toxic to dogs, cats, and horses, so the fresh or dried culinary herb does not contain a poisonous principle. That said, non-toxic is not the same as risk-free. Feed only plain rosemary with no added garlic, onion, salt, butter, or seasoning blends (garlic and onion ARE toxic to dogs). Use it as a small flavor accent (a pinch of chopped leaves or a partial sprig), not a large serving: even a benign herb eaten in volume can cause GI upset such as vomiting, diarrhea, or mild stomach discomfort because of its fiber and aromatic oil content. Whole woody sprigs and stems can be a choking hazard or cause mouth/GI irritation, so chop fine for small dogs. Rosemary essential oil is a separate, far more concentrated product and should NOT be given orally or applied undiluted to dogs; concentrated rosemary oil/extract contains compounds (including camphor) that may overstimulate the nervous system. Dogs with a history of seizures or epilepsy should avoid concentrated rosemary essential oil entirely. As with any new food, introduce a tiny amount first and stop if your dog shows an allergic or digestive reaction, and check with your veterinarian before adding herbs to the diet of a pregnant, nursing, or chronically ill dog.

Can dogs eat rosemary?

Yes. The ASPCA lists rosemary (Rosmarinus officinalis) as non-toxic to dogs. Small amounts of plain, chopped fresh or dried rosemary used as a flavoring are generally safe. Keep portions small and avoid any seasoning mixes that contain garlic or onion, which are toxic to dogs.

Is rosemary essential oil safe for dogs?

Concentrated rosemary essential oil is much riskier than the culinary herb and should not be given by mouth or applied undiluted to a dog's skin. It can cause vomiting and diarrhea, and compounds such as camphor may overstimulate the nervous system. Dogs with seizure disorders or epilepsy should avoid rosemary essential oil entirely.

What if my dog ate a lot of rosemary or chewed the plant?

Because rosemary is non-toxic, a dog that nibbles the plant is unlikely to be poisoned. Eating a large quantity may still cause temporary vomiting, diarrhea, or mild stomach upset, and woody stems can be a choking or GI-irritation hazard. Offer water, monitor your dog, and contact your veterinarian if vomiting, diarrhea, or distress persists.

• ASPCA Animal Poison Control - Toxic and Non-Toxic Plants: Rosemary

Last updated 2026-06-25