What should I do if my pet eats Ethylene Glycol (Antifreeze) Poisoning in Dogs?

If your pet has ingested this substance, contact your veterinarian or the ASPCA Animal Poison Control Center at (888) 426-4435 immediately. Do not wait for symptoms to appear. Have information about your pet's weight, the substance ingested, estimated amount, and time of ingestion ready. Do not induce vomiting unless instructed by a veterinary professional.

What are the symptoms of Ethylene Glycol (Antifreeze) Poisoning in Dogs?

Symptoms vary based on the amount ingested and individual pet factors. Common signs include vomiting, diarrhea, lethargy, loss of appetite, and changes in urination or behavior. Severe cases may involve tremors, seizures, or collapse. Review the detailed symptom timeline in this article and contact a veterinarian immediately if you observe any concerning signs.

How much Ethylene Glycol (Antifreeze)... is toxic to my pet?

The toxic dose depends on your pet's weight, breed, and the specific substance. Even small amounts can be dangerous for small pets or with highly concentrated toxins. The ASPCA Animal Poison Control Center (888-426-4435) can calculate the risk based on your pet's weight and the estimated amount consumed. Never assume a small amount is safe — always call for professional assessment.

What is the ASPCA classification for Ethylene Glycol (Antifreeze) Poisoning in Dogs?

The ASPCA classifies this substance as Critical. This classification is based on the concentration of toxic principles, the minimum dose required to cause symptoms, and the speed of onset. The ASPCA Animal Poison Control database is the primary reference for pet toxicity data in the United States. Always cross-reference with your veterinarian for species-specific guidance.

Chemicals Critical

Ethylene Glycol (Antifreeze) Poisoning in Dogs

Published: 2026-07-03 · Updated: September 2026

Quick Take

Ethylene glycol in antifreeze is sweet-tasting and lethal. As little as a tablespoon kills a small dog. Kidney failure within 24-72 hours.MeowWonder reference severity label: 5/10 — This is an internal editorial label based on the listed danger category, not a clinical score,...

ℹ Low Risk — Toxicity Profile

Danger Level	Critical
Reported Reference Value	4.4 mL/kg Reference values vary by product, species, dose form, and clinical context. Do not use this number to decide whether to wait or treat at home.
Target Organ	Kidneys

Ethylene glycol in antifreeze is sweet-tasting and lethal. As little as a tablespoon kills a small dog. Kidney failure within 24-72 hours.

MeowWonder reference severity label: 5/10 — This is an internal editorial label based on the listed danger category, not a clinical score, dose calculator, or diagnosis. Contact a veterinarian or poison service for exposure-specific advice.

If exposure may have happened

Contact a veterinarian or animal poison service now, even if your pet looks normal. Keep the package or plant sample, note the product strength and time of exposure, and do not induce vomiting or give home treatment unless a veterinary professional instructs you.

This is not veterinary advice. If your pet may have ingested a toxic substance, contact your veterinarian or the ASPCA Animal Poison Control Center at (888) 426-4435 immediately. This page is an educational reference only; it does not provide a dose calculation, diagnosis, or home-treatment plan.

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Frequently Asked Emergency Questions

My pet just ate this — what should I do right now?

Call a veterinarian or the ASPCA Animal Poison Control Center at (888) 426-4435 immediately. Do not wait for symptoms. Do not induce vomiting unless a vet instructs you to — some substances cause more damage coming back up. Have ready: what your pet ate, how much, how long ago, and your pet's weight.

How much is toxic — will a small amount hurt my pet?

The toxic dose depends on your pet's weight and the specific substance. Even small amounts can be dangerous for small pets or with highly toxic substances. There is no universally safe amount. Always call a vet to assess based on your pet's weight and estimated consumption.

How long until symptoms appear?

Some toxins show effects within 30 minutes to 6 hours. Others take 24-72 hours. Waiting to see if symptoms develop is dangerous — by the time you see signs, organ damage may already be underway. The best intervention window is immediately after ingestion.

Can my pet survive if treated quickly?

With a danger level of Critical, early veterinary intervention dramatically improves outcomes. Pets treated within hours of ingestion have the best prognosis. Never assume your pet will be fine — always err on the side of caution.

Can I induce vomiting at home with hydrogen peroxide?

Do NOT induce vomiting unless a veterinarian specifically instructs you to. Some toxins cause MORE harm when vomited. Hydrogen peroxide can irritate the esophagus. Call a vet or poison control first — they will tell you whether home treatment is safe.

MeowWonder Editorial Team Independent Reference Editors

MeowWonder editors organize publicly available veterinary and animal-behavior references. We do not provide veterinary care or claim clinical credentials.

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References & Further Reading

ASPCA Animal Poison Control Center. Animal Poison Control FAQ. aspca.org/pet-care/animal-poison-control
U.S. Food & Drug Administration, Center for Veterinary Medicine. Animal Health & Safety. fda.gov/animal-veterinary
National Institutes of Health, PubMed. Veterinary Toxicology Research Database. pubmed.ncbi.nlm.nih.gov
Pet Poison Helpline. 24/7 Animal Poison Control Emergency Service. petpoisonhelpline.com

Citations are provided for educational reference. Content is reviewed periodically but does not replace professional veterinary advice. If your pet shows signs of illness, contact a licensed veterinarian immediately.