Is Oregano Toxic to Cats?

Yes — Oregano is mildly toxic to cats

Oregano is technically mildly toxic due to essential oil content, but a pet nibbling on the plant is unlikely to have any serious reaction.

Symptoms in Cats

If your cat eats Oregano, watch for these symptoms (onset: 1 to 4 hours):

  • Mild GI upset
  • Vomiting if large quantity

What To Do

Only concerning in large amounts or as concentrated oil. The plant itself is very low risk.

Cat-Safe Alternatives to Oregano

✓ Basil ✓ Cilantro ✓ Dill

Quick Facts

Origanum vulgare

Yes (mild)

Essential oils (carvacrol, thymol)

leaves

Sources: ASPCA Animal Poison Control Center, Pet Poison Helpline. View full Oregano toxicity profile.