Essential oils have become a fixture in many Australian households — diffusers humming in living rooms, roller bottles in handbags, lavender on pillowcases. And it’s natural to wonder whether the oils benefiting us might also help our pets. The answer is: sometimes yes, often with caution, and occasionally absolutely not.
As an integrative vet, I use essential oils as part of a broader natural health toolkit. But I also see animals harmed by well-meaning owners who didn’t know what they didn’t know. So let’s set the record straight.
Why animals are different from us
Pets metabolise compounds very differently from humans. Cats in particular lack a key liver enzyme (glucuronyl transferase) needed to break down many aromatic compounds — meaning oils that are perfectly safe for you can accumulate to toxic levels in your cat surprisingly quickly. Dogs are more tolerant but still far more sensitive than adult humans. Small animals, birds, and reptiles are even more vulnerable.
This doesn’t mean essential oils are off-limits — it means they must be used correctly, at the right dilution, with the right species, and ideally under guidance from an integrative vet.
Oils that are generally considered safer for dogs
- Lavender — calming, good for anxiety and minor skin irritation. One of the most well-tolerated oils for dogs when properly diluted.
- Frankincense — anti-inflammatory, immune supportive, often used for older dogs with joint pain or cancer support.
- Chamomile (Roman) — gentle, soothing for skin and digestion, calming for anxious dogs.
- Cardamom — supports digestion and respiratory function.
- Cedarwood — useful for skin and coat health, also mildly calming.
Always dilute to 0.5–1% for dogs (that’s roughly 1 drop of essential oil per teaspoon of carrier oil). Never apply neat oil directly to skin.
Oils to avoid around cats entirely
- Tea tree (melaleuca) — toxic to cats even in small amounts
- Eucalyptus — respiratory irritant, potentially toxic
- Peppermint — can cause neurological symptoms, diluted.
- Citrus oils — toxic to cats
- Clove, oregano, thyme — too hot and phenol-rich for feline systems
- Wintergreen — contains methyl salicylate, dangerous in quantity for cats, diluted on skin in small amounts for dogs is ok.
If you have cats in the home, be very cautious with any diffusion. A well-ventilated room, short diffusion periods, and always giving your cat an easy exit from the room are minimum precautions. Watch for watery eyes, drooling, lethargy, or wobbliness — these are signs of toxicity.
Safe ways to use essential oils with animals
Diffusion with caution — Use an intermittent diffuser (on for 30 minutes, off for 30 minutes) in a well-ventilated space. Never in an enclosed room with a small animal. Always let your pet leave if they want to.
Topical application (dogs only, diluted) — Add 1 drop of a safe oil to a teaspoon of coconut or fractionated coconut oil. Apply to the back of the neck or base of spine, avoiding face, genitals, and any broken skin.
Inhalation — Place 1 drop on a cloth or tissue near your dog’s bed. This passive, low-dose exposure is often enough for a calming effect without any risk.
Environmental use — A few drops on a bandana or in a spray bottle with water (shake well before each use) can help anxious dogs in cars or at the vet. We make a calming spray with lavender, vetiver, chamomile which works a treat for this purpose.
My golden rules
- Less is always more with animals
- Always dilute — never use neat- except for a few topical cancer treatments- frankincense, myrrh and lavender are quite safe.
- Cats and birds need caution; dilute sprays can be helpful birds especially like the citrus emotionally uplifting.
- Source therapeutic-grade oils from reputable suppliers
- If your pet seems unwell after oil exposure, fresh air first, vet second
Essential oils can be a genuinely useful part of your pet’s natural health toolkit when used respectfully and knowledgeably. They’re not magic, and they’re not universally safe — but in the right context, with the right animal, they can support calm, comfort, and wellbeing beautifully.
For a comprehensive guide to using essential oils safely with your animals, along with a full A-Z of natural health approaches for dogs and cats, visit my bookstore at https://books.by/naturopathvet — and feel free to book a consultation at Animal Wellness, East Brisbane, via http://www.animalwellness.com.au
“Michael Leunig is in support of the right of individuals to conscientiously refuse vaccination for their children. This support does not necessarily indicate his position on vaccination per se, it is primarily a human rights issue that he addresses in his cartoons. He also illuminates questions regarding maternal instinct and concern, and appeals for tolerance to be extended to the possibility that a mother’s personal wisdom and insight concerning her child’s health has been traditionally near-sacred and may be of enormous ongoing value. He contends that such conscientious maternal concern should not be dismissed too lightly or overruled so belligerently. Most of humanity owes much to the natural care of a mother at the beginning, with all the intuition, attunement and skill involved in that individual mothering process. Michael feels the punitive approach by the government to people of conscientious belief regarding this matter is coercive and unjust, and sets an appalling example to society about how those opposed might be universally regarded and treated.” Providing a “one size fits all” policy on vaccinating the population of newborns does not fit well with the diversity of genetics and epigenetic factors. WE need to scientifically and medically examine each individual’s family risk factors, and understand their immunogenetic capabilities, and find out how they can be given supportive nutritional components. Tony Abbot’s plan of throwing a magnitude of vaccines into the crowd of babies and to just cross our fingers hoping that no damage might occur is a bit like the Leunig cartoon- mother’s are justifiably concerned and are running away. It would be wise to obtain further information for each parent group about how we can shield our genetically weaker and susceptible individuals. There is some testing that can be done prior to vaccinating willy nilly. The genomic knowledge of MTHFR and Pyroluria are just 2 of the genetic predisposition genes where epigenetic factors (food, synthetic chemicals, artificial dyes, parabens, BPA, plasticizers, inutero stress- ie mother’s cortisol levels while pregnant) and vaccines all come together to create an immunological soup where the microbiome of the mother and her child are affected. These people have metabolic pathways where their folates, zn and other trace minerals get flushed out so any inflammatory process (eg being vaccinated, stressed etc) creates a myriad of problems, unless they are supplemented and put on excellent diets and provided with a low stress environment/lifestyle. 
