Just a Few Drops Can Be Deadly: These Symptoms May Indicate Your Dog Has Ingested Antifreeze

Written by Josefine Bagger Sommerlund

Mar.03 - 2025 2:45 PM CET

Dogs are attracted to antifreeze, but just a few drops can be deadly!

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Even a small amount of antifreeze can be life-threatening for your dog.

Learn how to recognize the symptoms in time and protect your four-legged friend from poisoning!

Ethylene Glycol – A Hidden Danger

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Ethylene glycol, found in antifreeze, coolant, and brake fluid, is extremely toxic to dogs.

Even small amounts can cause severe kidney damage and, in the worst cases, be fatal.

Quick Action Is Crucial

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If you suspect your dog has ingested ethylene glycol, contact a veterinarian immediately.

Emergency treatment is essential, and you should not wait for symptoms to appear.

How Poisoning Occurs

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Dogs are at risk of poisoning if they:

  • Lick up spilled antifreeze from the ground or floor.

  • Gain access to an open container of ethylene glycol-based fluid.

Ethylene glycol has a sweet taste and smell, making it especially appealing to dogs, which increases the risk of accidental ingestion.

Symptoms of Poisoning

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Poisoning symptoms appear quickly, and after 12-24 hours, the condition can significantly worsen.

Immediate treatment is critical.

This Usually Happens Within Approximately 30 Minutes - 12 Hours:

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  • Nausea and vomiting

  • Increased thirst and urination

  • Staggering or disorientation

  • Seizures

After 12-24 hours, the following may occur:

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  • Loss of consciousness

  • Acute kidney failure

  • Lack of urination

At this stage, the dog's condition is critical.

Veterinary Treatment

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If ingestion occurred recently, the veterinarian may induce vomiting and administer an antidote such as fomepizole or ethanol.

Additionally, fluid therapy and supportive care may be necessary to protect the kidneys.

Prevention is the Best Protection

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  • Keep toxic fluids out of your dog's reach.

  • Clean up any spilled antifreeze, coolant, or brake fluid immediately.

  • Prevent your dog from roaming in areas where toxic spills may occur, such as garages, workshops, and parking lots.

Important to Remember

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Ingesting just 2 ml of ethylene glycol per kg of body weight requires immediate treatment.

If the amount is unknown, veterinarians will often initiate treatment as a precaution. Acting quickly can save your dog's life.