Cats can safely eat very small amounts of rosemary in most cases, but there are caveats to consider. Here’s a practical overview to help you decide what to do. verdict in brief

• Generally safe in tiny amounts: Many reputable sources classify fresh rosemary as non-toxic to cats, and occasional small amounts in food or as a garnish are usually fine for healthy cats. However, this does not mean it’s a necessary or beneficial part of their diet. Moderation is key. [ASPCA related guidance; veterinary sources with similar statements]
• Avoid large quantities or concentrated forms: Eating large amounts or rosemary essential oil or strong extracts can irritate the stomach or cause digestive upset, and concentrated substances can be dangerous. If a cat ingests a lot of rosemary or a rosemary product with added ingredients, monitor for symptoms and contact a veterinarian if anything concerning appears. [general veterinary guidance]
• Individual reactions vary: Some cats may be more sensitive and show signs like vomiting or diarrhea even with small amounts. If any adverse reaction occurs, discontinue rosemary and consult a vet. [observational cautions]

practical tips

• Use sparingly in meals: If you want to flavor your own cooking for a cat-friendly treat, keep rosemary amounts very small and use it only occasionally. Do not rely on herbs as a dietary inclusion for cats. [common-sense guidance]
• Avoid essential oil or extracts: Rosemary essential oil or highly concentrated rosemary products should never be given to cats and should be kept well out of reach. Ingesting or inhaling essential oils can be harmful. [safety guidance]
• Watch for plant-related allergies or GI upset: If your cat has a history of GI issues or allergies, introduce rosemary even more cautiously and in tiny amounts. [risk-avoidance guidance]

quick questions to consider

• Is your cat currently healthy with no known digestive sensitivities? If yes, a tiny pinch of fresh rosemary in food occasionally is likely fine. If not, proceed with extra caution. [general health guidance]
• Does your cat have access to rosemary plants or rosemary-scented products like sprays? If so, keep such items out of reach to prevent accidental ingestion or exposure to concentrated forms. [household safety]

if you want, I can summarize the latest veterinary sources on rosemary and cats or help you assess a specific recipe or herb product for safety. [references consistent with typical veterinary and ASPCA guidance]