Dogs
Potentially toxicConsulted references classify the plant as toxic or irritating for that pet type.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Sources
dog safety reference
Is Greek Oregano safe for dogs?
Origanum vulgare hirtum
Greek Oregano is a popular culinary herb known for its pungent, aromatic leaves and low-growing, spreading habit. While widely used in cooking, ingestion of large quantities by pets can lead to gastrointestinal distress.
Greek OreganoOreganoOriganum vulgareOriganum vulgare hirtum
- Light
- Full sun
- Habit
- Spreading, mounding
- Care
- Low
Safety status
What this means for your dog
Dogs that snack on garden oregano usually only get mild GI upset from the carvacrol and thymol oils in the leaves. ASPCA lists oregano as toxic but the typical clinical course is unimpressive — the danger spike is concentrated essential oil, not the herb itself.
What to watch for
Mild vomiting and diarrhea are the most common signs. Larger ingestions may cause lethargy and decreased appetite; oregano essential oil exposure can cause more pronounced GI signs and ataxia.
Time window
ASPCA does not publish onset or duration; GI signs typically appear within hours and resolve within 24 hours with supportive care.
When to call the vet
Call your vet or ASPCA Poison Control (888-426-4435) if vomiting persists, you see blood in stool, or your dog ingested oregano essential oil. A few chewed leaves usually do not require a visit.
Sources: ASPCA, NC State Extension (no first-aid guidance).
If a pet has chewed or swallowed plant material and is showing symptoms, contact a veterinarian or poison resource immediately. This product is for structured reference, not diagnosis.
Dogs — concern notes
Common signs
Vomiting, diarrhea, and potential gastrointestinal upset.
Escalation note
While generally mild, ingestion of large amounts can irritate the digestive tract. Consult your veterinarian if you observe persistent symptoms.
Safer alternatives
No hand-picked alternatives for this plant yet. You can still pick your own using the Compare button on any other plant.
Source evidence
ASPCA Toxic Plant List
toxicology · 99% reliability
Oregano is listed as toxic to both cats and dogs due to potential gastrointestinal irritation.
NC State Extension Plant Toolbox
botanical · 94% reliability
Origanum vulgare is a perennial herb in the Lamiaceae family, commonly used as a culinary spice.
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