Alcohol (ethanol) causes CNS depression, respiratory failure, and metabolic acidosis in dogs at much lower doses than in humans. Dogs have a smaller body mass and metabolize alcohol far less efficiently. Even beer or wine can be fatal to small dogs.
Why Is This Toxic to Dogs?
Ethanol is rapidly absorbed and causes acute intoxication in dogs. Unlike humans who process ethanol through efficient liver enzymes, dogs are overwhelmed much faster. The resulting metabolic acidosis and CNS depression can be rapidly fatal.
Hidden sources of alcohol include: raw yeast dough (fermenting), rotten fruit (fermented sugars), mouthwash (contains alcohol), hand sanitizer, and some medications. Never give any alcohol-containing product to dogs.
| Source | Ethanol Content | Toxic Amount | Risk Level |
|---|---|---|---|
| Liquor / Spirits | 40%+ ethanol | Very small amounts | EXTREME |
| Wine | 12–15% ethanol | Small amounts for any dog | HIGH |
| Beer | 4–8% ethanol | A few sips for small dogs | HIGH |
| Raw yeast dough | Fermentation produces ethanol | Any amount | HIGH |
Symptoms to Watch For
Watch for these signs and call your vet immediately if any appear:
Rapid Onset
Ethanol absorbed quickly. Disorientation, vomiting begin within 30 minutes.
CNS Depression
Stumbling, extreme sedation, dropping body temperature.
Severe Toxicity
Respiratory depression, seizures possible. Life-threatening at this stage.
Crisis / Recovery
With IV fluids and supportive care, dogs can recover. Without: respiratory failure.
🚨 What To Do If Your Dog Was Exposed
Frequently Asked Questions
Toxic dose is 5.5 ml of 100% ethanol per kg body weight. For a 10 lb dog, that's less than 1 oz of spirits.
A small lick from the floor is unlikely to cause severe toxicity for a larger dog, but any significant ingestion warrants a vet call.
Yes — hops (used in beer brewing) are separately toxic to dogs and can cause malignant hyperthermia (dangerously high temperature).
Most cooking burns off alcohol, but heavily alcohol-soaked foods (rum cake, alcoholic truffles) may retain enough to cause toxicity.
Disorientation, vomiting, slowed breathing, and extreme lethargy are the main signs. These can progress to seizures and respiratory failure quickly.