
Scented candles are a great way to create a cosy and inviting atmosphere in your home. However, if you're a dog owner, it's important to be mindful of the potential risks that candles can pose to your furry friend. While most candles are generally considered safe for dogs, certain ingredients and scents can be harmful or even toxic to our four-legged companions. So before you light up, it's crucial to understand the potential dangers and take the necessary precautions to ensure your dog's safety.
| Characteristics | Values |
|---|---|
| Candles with paraffin wax | Can emit toxic chemicals such as formaldehyde, acetaldehyde, and acrolein. |
| Candles with essential oils | Can be toxic to dogs if ingested or applied to the skin. |
| Symptoms of essential oil poisoning | Vomiting, drooling, difficulty breathing, watery eyes, sneezing, coughing, upset stomach, liver and nervous system damage, low heart rate. |
| Safer alternatives | Unscented candles, candles made from vegetable wax, soy, coconut, or beeswax. |
| Other precautions | Keep candles out of reach, avoid small spaces, ensure good ventilation, do not leave dogs unattended with lit candles. |
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What You'll Learn

Toxicity and ingestion
While candles can be a great way to create a cosy and calming ambiance, it is important to be cautious when using them around dogs. Ingesting candle wax can cause blockages and toxicity in dogs due to the harmful chemicals present. Therefore, it is crucial to keep candles out of your dog's reach and never leave them unattended with a lit candle.
Paraffin wax, commonly found in commercial candle brands, releases toxic substances harmful to dogs when burned. These toxins include formaldehyde, acetaldehyde, and acrolein, which can be dangerous. As such, it is recommended to opt for candles made from natural ingredients like soy, coconut, or beeswax, which are safer alternatives.
Essential oils used in scented candles can also be toxic to dogs if ingested or applied to the skin. Oils such as cinnamon, citrus, peppermint, pine, tea tree, wintergreen, and eucalyptus should be avoided as they can trigger sensitivities and cause symptoms like vomiting, drooling, difficulty breathing, and nervous system damage. If you choose to use essential oils, ensure the room is well-ventilated to prevent irritation to your dog's nose and eyes.
If you suspect your dog has ingested candle wax or essential oils, contact your veterinarian or a pet poison hotline immediately. Signs of toxicity include drooling, vomiting, uncoordinated movements, depression, and diarrhoea. It is important to act quickly to ensure your dog receives the necessary treatment and prevent any potential health complications.
In summary, while candles can be enjoyed in a pet-friendly manner, prioritizing your dog's safety is crucial. By choosing the right type of candle, ensuring proper ventilation, and keeping candles out of your dog's reach, you can create a soothing environment without compromising your furry friend's well-being.
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Paraffin wax dangers
Paraffin wax is a common ingredient in candles due to its accessibility and affordability. However, there are several dangers associated with its use. Firstly, paraffin wax is derived from petroleum, coal, or shale oil, and as a result, it contains known carcinogens such as benzene and toluene. These toxic chemicals are released into the air during the combustion process of burning paraffin candles and can be harmful when inhaled, causing adverse effects on human and dog health.
Toluene, a colourless liquid found in crude oil, is emitted from gasoline fumes, vehicle exhausts, and cigarette smoke. It is also used as a solvent in various products such as paint, nail polish, and adhesives. Exposure to toluene, even at mild levels, can lead to frequent headaches, nausea, dizziness, and insomnia in humans. Benzene, another colourless liquid derived from natural gas and crude oil, is also a known carcinogen. Studies have shown that workers exposed to high levels of benzene in industries such as chemical, shoemaking, and oil refining have higher rates of acute myeloid leukemia.
In addition to the health risks, paraffin wax can also cause issues with black soot. The soot produced by paraffin candles has the same composition as the soot emitted from a toaster, and it can build up on surfaces and in ventilation systems, requiring additional cleaning and maintenance.
Furthermore, paraffin wax is not environmentally friendly. Its production is linked to the oil manufacturing process, which contributes to the use of fossil fuels and has negative environmental impacts.
Lastly, paraffin candles may pose a risk to dogs. Some dog breeds are prone to ingesting non-food items, and consuming paraffin wax can lead to blockages and toxicity due to the harmful chemicals present. Additionally, dogs have a sensitive sense of smell, and the artificial scents or heavy perfumes in paraffin candles can irritate their respiratory systems and trigger sensitivities.
To mitigate these dangers, it is recommended to opt for candles made from alternative waxes such as soy, vegetable, beeswax, or stearin, which are considered safer and less toxic options for both humans and pets.
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Essential oils to avoid
While candles are generally considered safe for dogs, some candles contain harmful ingredients and toxic essential oils that can be dangerous for dogs. Essential oils are typically extracted from plants and have a powerful fragrance. They are derived from certain volatile compounds within a plant.
Some essential oils are harmless, especially in small quantities, but many are poisonous or toxic because their reactions mess up a dog's natural body chemistry. Human bodies can process a lot of things, but animals are often much more limited in what is safe for them.
If you wish to use essential oils, it is recommended to do so only with a vet's approval. Many essential oils should be avoided, and some may cause problems if ingested or placed directly on the skin. Never put any essential oil or oil product directly on your dog's coat. This includes products that have been marketed for pets, such as flea and tick products for dogs.
Essential oils that should be avoided include:
- Eucalyptus
- Peppermint
- Clove
- Tea tree
- Wintergreen
- Pine
- Cinnamon
- Citrus
- Pennyroyal
- Sweet birch
- Ylang ylang
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Safer alternatives
While candles can be a great way to create a cosy atmosphere, it is important to be mindful of your dog's safety and well-being. Many scented candles contain essential oils and synthetic fragrances that can be irritating or harmful to dogs, especially if ingested or absorbed through the skin.
Unscented Candles
Unscented candles are less likely to contain essential oils or synthetic fragrances, making them a safer option for dogs. Candles made from vegetable wax, soy, or beeswax are safer choices than paraffin wax, which releases toxic substances harmful to both dogs and humans.
Pet-Safe Candles
Pet-safe candles are specifically designed to be safe for dogs and other pets. These candles use non-toxic ingredients and avoid harmful additives. Some pet-safe candles even offer calming scents like lavender, which can help reduce stress and promote relaxation in dogs.
Flameless Candles
Battery-operated or LED flameless candles provide the same relaxing glow as traditional candles without the risk of fire or wax ingestion. This makes them a much safer option for dogs, especially those who are curious and playful.
Air Diffusers/Fresheners
Air diffusers are an excellent alternative to scented candles, allowing you to enjoy pleasant aromas while keeping your dog safe. You can also use essential oils specifically formulated for dogs in your diffuser to provide them with a soothing aromatherapy session.
Ventilation and Placement
If you choose to use scented candles, ensure the room is well-ventilated to minimise the risk of irritating your dog's nose and eyes. Keep candles out of your dog's reach to prevent accidental burns or ingestion, and avoid leaving candles unattended when you have a dog in the house.
Remember, it is always important to prioritise your dog's health and take the necessary precautions to create a safe and comfortable environment for your furry friend.
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Signs of irritation
While candles can be a great way to create a cosy atmosphere, certain types of candles can cause irritation to dogs. The signs of irritation in dogs exposed to harmful candles can include watery eyes, sneezing, coughing, vomiting, drooling, diarrhoea, difficulty breathing, and in some cases, even depression.
Dogs have a much stronger sense of smell than humans, and their smaller lungs make them more susceptible to harm from toxic fumes. Therefore, candles that contain artificial scents or heavy perfumes can irritate dogs and even lead to serious illnesses such as aspiration pneumonia.
Paraffin wax, found in many commercial candles, releases toxic substances that are harmful to dogs. These candles should be avoided, and replaced with candles made from natural ingredients like soy, coconut, or beeswax, which are safer options.
Essential oils in candles can also be harmful to dogs, with certain oils such as eucalyptus, peppermint, cinnamon, pine, tea tree, and wintergreen being toxic if ingested or applied to the skin. If you suspect your dog has ingested candle wax or essential oils, contact your veterinarian or a pet poison hotline immediately.
To prevent irritation and ensure your dog's safety, it is recommended to use flameless candles or air diffusers, and to always keep candles out of your dog's reach.
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Frequently asked questions
Yes, pine candles are bad for dogs. Pine is one of the essential oils that are toxic to dogs and can cause vomiting, drooling, or difficulty breathing.
Candles made from paraffin wax are harmful to dogs and humans. Paraffin wax emits toxic chemicals such as formaldehyde, acetaldehyde, and acrolein when burned. Candles with synthetic scents can also be harmful to dogs with respiratory issues.
Signs that a candle is bothering your dog include watery eyes, sneezing, coughing, drooling, vomiting, uncoordinated movements, and depression. If you notice any of these signs, blow out the candle, open the windows, and take your dog outside.











































