What drooling means at the 3-hour mark
Excessive salivation in a small dog this soon after aspirin ingestion suggests stomach irritation has already begun. Unlike humans, dogs can't effectively metabolize salicylates—the 5kg body weight puts your poodle at high risk for rapid toxin buildup. That drool may contain microscopic blood even if you can't see it, a sign of developing ulcers.
The next 2-6 hours often bring worsening signs: vomiting (possibly with coffee-ground material indicating blood), restlessness from abdominal pain, or unusual lethargy as the kidneys struggle. Time your call to the vet based on symptom progression rather than waiting for 'serious' signs—small dogs decompensate quickly.
Why pill coatings complicate treatment
Enteric-coated or buffered aspirin formulations delay absorption, meaning symptoms can appear suddenly hours later when the full dose hits the bloodstream. Your vet needs to know exactly what type was ingested—check the bottle for words like 'delayed release' or 'safety coating.' These versions are especially dangerous because they bypass early vomiting signals that might otherwise purge some of the toxin.
For a dog this size, even a single 81mg 'baby aspirin' exceeds safe thresholds. The coating means gastric irritation symptoms like drooling appear while most of the drug still hasn't entered the system—the worst effects may be yet to come. Don't be fooled by temporary improvement after initial vomiting.
Emergency bloodwork priorities
Vets will likely test blood pH levels first—aspirin toxicity creates a distinctive metabolic acidosis. Your 5kg dog's small size means even minor imbalances can cause dangerous electrolyte shifts. They'll also check kidney values and clotting times, as aspirin interferes with platelet function.
Small breeds often need more aggressive IV fluid support than larger dogs to prevent kidney shutdown. The fluids help flush toxins while protecting delicate kidney tubules from concentrated aspirin metabolites. Expect at least 48 hours of monitoring—organ damage can appear days after ingestion.
Home observation isn't an option
With a dog under 7kg, there's no safe waiting period after confirmed aspirin ingestion. Their limited blood volume can't dilute toxins effectively, and their higher metabolic rate speeds drug absorption. What looks like mild drooling now could progress to seizures or coma within hours.
Watch for subtle neurological changes: disorientation, twitching, or unusual vocalizations. These indicate the toxin has crossed the blood-brain barrier—a critical emergency. Keep your dog warm and quiet during transport to avoid accelerating circulation, but don't delay seeking professional care.
For a dose worked out against your pet's weight, use the Aspirin Toxicity Calculator.