How a 15 kg dog processes that entire cup
One cup of beer contains roughly the alcohol equivalent of two shots for a dog this size—but their metabolism handles it poorly. Unlike humans, dogs can't efficiently break down ethanol, so it circulates longer at higher concentrations. The carbonation also speeds absorption, meaning signs can appear within 20 minutes in some cases.
Watch for a "drunken" gait where the back legs cross over each other or the dog struggles to stand after lying down. Their bark might sound different—either higher pitched or oddly slurred. These neurological effects usually mean the alcohol has reached the brainstem, where it depresses vital functions.
The danger beyond intoxication
Beer's hops add another layer of risk—they can trigger malignant hyperthermia in some dogs, causing body temperature to spike dangerously. Feel your dog's ears and paw pads; if they're hotter than usual alongside rapid panting, this is an emergency beyond alcohol poisoning. Pale gums or red-tinged urine are also red flags.
Even "light" beers pose problems because the water content means dogs drink more volume before feeling full. A 15 kg dog absorbing a cup's worth could hit blood alcohol levels that suppress breathing. Watch for ribs moving more visibly or noisy inhalation as the chest muscles work harder.
When vomiting becomes risky
By the time a dog shows obvious drunkenness, inducing vomiting could cause aspiration since their gag reflex is impaired. If the beer was consumed less than 15 minutes ago and the dog still seems completely normal, a vet might consider safe vomiting methods—but never try this at home once signs appear.
Liquid alcohol moves fast; stomach pumping has limited value after 30 minutes. Vets instead focus on supportive care—keeping airways open, maintaining body temperature, and preventing hypoglycemia. Your 15 kg dog may need monitoring until their system clears all ethanol, usually 12-24 hours for this amount.
Emergency transport precautions
Move a tipsy dog carefully—their poor coordination makes stairs and car jumps hazardous. Wrap them in a blanket to prevent injury if they thrash, but avoid restricting chest movement. Bring the beer can or bottle—the label helps estimate alcohol percentage, and craft beers sometimes have higher concentrations.
Note whether it was ale, lager, or stout—darker beers often contain more congeners (toxic fermentation byproducts). If the dog vomited, collect a sample in a baggie without forcing the mouth open. Position them on their side during the ride to keep airways clear if they lose consciousness briefly.
The step-by-step response, from the first minute to the vet visit, is in our Ethanol Poisoning in Dogs and Cats emergency guide.