Suspect poisoning? US: ASPCA Poison Control (888) 426-4435 · UK: 01202 509 000 · Severe symptoms → nearest emergency vet now.

My 15 kg dog licked a drop of tea tree oil and the vet treated him — what tests will they run and how long should I monitor him at home?

Dogs · Emergency guide

Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual

Short answer

The vet will likely run blood tests to check liver and kidney function, as concentrated essential oils can cause organ damage. They may also monitor his blood glucose and neurological status if he showed any wobbliness or tremors. After returning home, you need to watch him closely for at least 24 to 72 hours. Look for returning signs like drooling, vomiting, weakness, or any unusual behavior. Recovery depends on the amount ingested and how quickly treatment began; follow all discharge instructions and return for any recommended recheck appointments.

Why are natural oils dangerous?

“Natural” does not mean safe. Concentrated oils such as tea tree can cause skin burns, wobbliness and seizures; wintergreen contains aspirin-like salicylates. Diffusers can irritate cats’ airways even without direct contact.

Why speed matters

Delaying care significantly worsens outcomes. Some signs appear hours or days later, so "looks fine right now" is not a reason to wait.

Signs to watch for

  • Smell of oil on fur, drooling, pawing at the mouth
  • Vomiting, skin redness or burns where oil touched
  • Wobbliness, weakness, lethargy
  • Tremors, seizures (severe)
  • Coughing, wheezing or breathing difficulty from diffusers

What to do right now

  1. Call your vet and tell them the exact oil and how much was involved.
  2. Do not induce vomiting for oils — they can be inhaled into the lungs.
  3. Wash the skin with dish soap and water if oil spilled on the fur.
  4. Do not use a diffuser in a room where a pet lives, especially with cats.
If your pet shows any of the signs above, go to the nearest emergency vet now and call ahead.

The step-by-step response, from the first minute to the vet visit, is in our Essential Oil Poisoning emergency guide.

Open the full emergency guide: Essential Oil Poisoning →