By Dial A Vet Veterinary Team
Ethylene glycol (common in many automotive antifreeze products) is highly toxic to dogs and cats. Sweet taste can increase risk of ingestion. This page is a multi-species emergency overview. Related: antifreeze poisoning in dogs.
If you suspect antifreeze ingestion, contact a veterinarian or emergency hospital immediately. Do not wait for dramatic signs. Do not induce vomiting unless a veterinarian specifically instructs you.
Key takeaways
- Even small amounts of ethylene glycol can be dangerous, especially in cats and small dogs.
- Early signs can look like drunkenness (wobbliness, vomiting, increased thirst/urination), then may progress to kidney failure.
- Time matters: antidotes and supportive care work best when started early.
- Bring the product label if available; some coolants use different ingredients with different risks.
- Clean spills promptly and store products locked away from pets.
Why antifreeze is dangerous
Ethylene glycol is metabolized into compounds that can damage the kidneys and cause severe systemic illness. Clinical stages often progress from neurologic/gastrointestinal signs to metabolic and kidney injury. Exact timelines vary by dose, species, and how quickly care begins.
Signs that need emergency care
- Known or possible licking/drinking of coolant or puddles
- Vomiting, drooling, lethargy
- Wobbliness, seeming drunk, seizures, or depression
- Increased thirst and urination early on, then reduced urine output later
- Rapid breathing, collapse, or refusal to eat
What to do right now
- Call an emergency veterinarian and describe the product, estimated amount, and time.
- Do not give home "antidotes," alcohol, or human medications unless directed by a veterinarian.
- Do not wait to see if signs appear.
- Prevent further access and wipe residual liquid from paws/fur if safe to do so, then wash hands.
Treatment overview (clinic-directed)
- Decontamination when appropriate and timely
- Specific antidotal therapy when indicated for ethylene glycol
- IV fluids and monitoring of kidney values and electrolytes
- Hospitalization; severe cases may need advanced care
This is educational overview only, not a home treatment protocol.
Prevention
- Store antifreeze sealed and out of reach
- Clean driveway and garage spills immediately
- Consider pet-safer coolants where available, knowing no product replaces safe storage
- Fix vehicle leaks promptly
FAQ
Is a tiny lick dangerous?
Yes, especially for cats and small pets. Treat any suspected exposure as urgent.
Are all coolants the same?
No. Ethylene glycol is the classic high-risk ingredient; other formulations exist. Bring the label to the clinic.
Can an online vet manage this at home?
Remote advice can help you get to care faster. Antifreeze poisoning generally requires in-person emergency treatment.
Talk with a vet
For suspected ingestion, go to emergency care now. For prevention questions afterward, book a consultation at dialavet.com.
References
- Pet Poison Helpline. Antifreeze.
- Merck Veterinary Manual. Ethylene glycol toxicosis in animals. https://www.merckvetmanual.com/toxicology/ethylene-glycol-toxicosis/ethylene-glycol-toxicosis-in-animals
- VCA Animal Hospitals. Ethylene glycol poisoning in dogs.
Disclaimer: This content is for educational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. Suspected antifreeze ingestion is an emergency.