The full answer
Hops come from the Humulus lupulus plant and are used in brewing. They're toxic to dogs, and reports of hops poisoning involve dogs.
Used (spent) hops left over from home brewing are a well-known risk, and the plant itself is also listed as toxic to dogs.
Hops poisoning isn't the same as alcohol poisoning. Hops are dangerous to dogs on their own.
Risks and Things to Know
- Hops can cause a rapid, life-threatening high fever (malignant hyperthermia).
- Other reported signs include a fast heart rate, rapid breathing or panting, vomiting, diarrhoea, agitation, and in severe cases seizures and death.
- Merck reports signs typically appear 8–24 hours after ingestion and can last 24–48 hours.
- Any dog can be affected; some breeds, including Greyhounds, Labrador Retrievers and Saint Bernards, are described as predisposed.
How much is okay?
Don't give hops to dogs in any amount. That includes leftovers from home brewing.
How Should I Prepare It?
- Not applicable. Keep brewing supplies and used hops out of reach and dispose of them securely.
