Is Oregano Safe for Dogs?
Quick answer
ASPCA lists Greek oregano (Origanum vulgare subsp. hirtum) as toxic to dogs, with gastrointestinal irritants that may cause mild vomiting and diarrhea. This classification is verified for the named subspecies; keep dogs from chewing oregano while checking the plant label.

Is Oregano safe for dogs?
Use caution(mild)
ASPCA lists Greek oregano (Origanum vulgare subsp. hirtum) as toxic to dogs, with gastrointestinal irritants that may cause mild vomiting and diarrhea. This classification is verified for the named subspecies; keep dogs from chewing oregano while checking the plant label.
Sources
- ASPCA Animal Poison Control - Greek oregano toxicity classification and signs
Disclaimer: This page is for general information only and is not veterinary advice. If your dogs ate Oregano, contact your veterinarian or animal poison control immediately.