05/11/2026
You usually hear about the antifreeze in the winter, but antifreeze leaks happen anytime of the year.
Why would my cat drink antifreeze?
Why cats seem willing to drink antifreeze is a mystery but ever heard the saying “curiosity killed the cat”? The toxic component of antifreeze is called ethylene glycol. Ethylene glycol has a sweet taste, which means animals and even children can be drawn to it. Cats do not taste ‘sweetness’ in the same way we do, but still find drinking ethylene glycol attractive. Ethylene glycol can be found after leaks of water coolant or brake fluid, after spillage of anti-freeze containing products when filling up cars, if products are left uncapped, in puddles and ditches. Uncleaned spillages can also get on cats’ paws, meaning they ingest the antifreeze as they clean themselves.
Sadly, cats only need to drink a teaspoon of antifreeze to receive a lethal dose. This means that all spillages, no matter how small, should be cleaned up quickly and thoroughly. The ethylene glycol is rapidly absorbed into the body after drinking, and triggers signs to appear from as little at 30 minutes to up to 8 hours after ingestion.
Ethylene glycol, the toxic component of antifreeze, causes severe kidney damage. Signs include:
***Vomiting
***Depression/lethargy
***Incoordination and unsteadiness
***Seizures (fits)
***Difficulty breathing
Damage develops from as soon as 30 minutes after ingestion, and worsens over several days until the kidneys fail. Intensive and rapid veterinary treatment, as soon after the antifreeze has been drunk as possible, may improve chances of survival.