Why every minute counts for a 25 kg dog
Antifreeze poisoning moves fast in dogs, and your dog's size means the toxic compounds are spreading through his bloodstream right now. The main danger is ethylene glycol, which forms crystals in the kidneys—irreversible damage can start within six hours. Even a few licks from a puddle can be fatal without prompt treatment. Your vet needs to administer an antidote (usually fomepizole or ethanol) intravenously to block toxin conversion.
While you're heading to the clinic, keep your dog warm and calm. Avoid offering water or food, as this could delay treatment. If possible, note the antifreeze brand or bring the container—some formulas contain bittering agents or different concentrations. Don't wait for symptoms like stumbling or excessive thirst; by then, the toxin is already attacking his nervous system and kidneys.
What the vet will do in the first hour
Expect blood tests to check kidney function and ethylene glycol levels, though some clinics use rapid urine tests for crystals. IV fluids will start immediately to flush the kidneys, paired with the antidote to stop further toxin production. Your dog may need hospitalization for 1-3 days for monitoring, as kidney failure can take 24-72 hours to manifest.
Time matters more than the amount consumed—even a tablespoon can be lethal. Prognosis drops sharply after 6-8 hours, so clinics prioritize antifreeze cases. If your regular vet isn't available, go to the nearest emergency animal hospital. They'll likely insert a urinary catheter to measure urine output, a key indicator of kidney function.
The deceptive calm before kidney failure
Some dogs appear normal 3-12 hours post-ingestion, but this 'false recovery' is dangerously misleading. The body temporarily processes the toxin into less noticeable compounds before kidney damage begins. Watch for subtle signs like decreased urination, lethargy, or loss of appetite during this window—report them immediately to the vet.
Bloodwork changes (elevated BUN/creatinine) often precede obvious symptoms. Dogs who get early treatment usually recover fully, but delayed cases may require dialysis or face euthanasia from kidney failure. Smaller amounts can still cause long-term damage, so don't assume he's safe if he only drank a little.
Preventing future exposure
Antifreeze's sweet taste attracts dogs, so check your property for leaks from cars, HVAC systems, or stored containers. Use pet-safe propylene glycol-based antifreeze if possible, and store all chemicals in locked cabinets. Rinse driveways thoroughly after spills—even residual amounts can be hazardous.
Train dogs to avoid puddles and consider bitter sprays near parking areas. Symptoms can mimic other conditions (e.g., alcohol poisoning), so always mention antifreeze exposure to the vet. Quick action today could save your dog's kidneys—and his life.
For a dose worked out against your pet's weight, use the Antifreeze Poisoning Calculator.