Is Tea Tree Oil (Melaleuca) Toxic to Dogs?

Tea tree oil (melaleuca oil) is one of the most toxic essential oils for pets. Even small topical applications can cause serious poisoning. Cats are especially vulnerable as they lack key liver enzymes to metabolize it.

Quick Answer

Yes, tea tree oil (melaleuca) is toxic to dogs. Highly toxic to pets — especially cats. Tea tree oil (melaleuca oil) is one of the most toxic essential oils for pets. Even small topical applications can cause serious poisoning. Cats are especially vulnerable as they lack key liver enzymes to metabolize it. Watch for symptoms like muscle tremors and weakness and difficulty walking (ataxia).

Emergency

If your dog was exposed, contact your vet or ASPCA Poison Control (888) 426-4435 immediately.

Symptoms to Watch For

Muscle tremors and weakness
Difficulty walking (ataxia)
Hypothermia
Excessive drooling
Liver failure in severe cases

Timeline

Symptoms can appear within 2-12 hours of exposure.

Treatment

Wash off skin with mild soap and warm water
Contact vet for guidance
IV fluids and liver support
Anti-tremor medication if needed
Keep warm (hypothermia is common)

Prevention

Never apply tea tree oil to pets
Even "natural" flea products with tea tree oil can be dangerous
Keep diffusers with tea tree oil out of rooms with pets
Cats are the most sensitive

Other Toxins Dangerous to Dogs

🐱 Cats version →🐰 Rabbits version →🐦 Birds version →🐹 Hamsters version →

Frequently Asked Questions

Is tea tree oil (melaleuca) toxic to dogs?▼

Highly toxic to pets — especially cats. Tea tree oil (melaleuca oil) is one of the most toxic essential oils for pets. Even small topical applications can cause serious poisoning. Cats are especially vulnerable as they lack key liver enzymes to metabolize it.

What happens if my dog is exposed to tea tree oil (melaleuca)?▼

Symptoms include: Muscle tremors and weakness; Difficulty walking (ataxia); Hypothermia. Symptoms can appear within 2-12 hours of exposure.

What should I do if my dog ingested tea tree oil (melaleuca)?▼

Wash off skin with mild soap and warm water. Contact vet for guidance. IV fluids and liver support.

How can I protect my dog from tea tree oil (melaleuca)?▼

Never apply tea tree oil to pets. Even "natural" flea products with tea tree oil can be dangerous. Keep diffusers with tea tree oil out of rooms with pets. Cats are the most sensitive.