Quantity
Even small amounts of hops can trigger malignant hyperthermia. There is no safe amount. Home brewers should treat hops with the same care they'd treat rat poison around dogs.
Notes
All forms are dangerous: fresh hop cones, dried hop pellets, and spent hops from the brewing process. Spent hops are especially risky because home brewers often compost them or leave them in accessible trash. Greyhounds, Labrador Retrievers, Saint Bernards, and other large breeds seem to be more susceptible, but all dogs are at risk.
Negative Signs
* Rapid, uncontrollable rise in body temperature
* Excessive panting and restlessness
* Racing heart rate
* Vomiting
* Abdominal pain
* Seizures
* Dark or bloody urine (from muscle breakdown)
FAQ
Q: I home-brew beer. How can I keep my dog safe?
A: Store all hops (fresh, dried, pellets) in sealed containers your dog can't access. Dispose of spent hops in a sealed bag inside a covered, dog-proof trash can. Never compost spent hops where a dog could reach them. Treat hops like the poison they are for dogs.
Alternatives
Keep hops completely out of reach — locked away during brewing, and disposed of in a dog-proof sealed container. There is no safe alternative to share.
Risks & Disclaimer
Hops poisoning is a life-threatening emergency. If your dog ate hops — fresh, dried, or spent — get to a vet immediately. Start cooling your dog on the way (wet towels, air conditioning) but do not delay getting professional help. Minutes matter.