- Beer-brewing hops cause overheating
- Within hours
- Affects: Body temperature
Why this verdict for dogs
Hops — fresh, pellets, or spent grains from home-brewing — can cause malignant hyperthermia in dogs: a dangerous, sometimes fatal spike in body temperature. Home brewers must keep all hops away from dogs.
Warning signs to watch for
- Heavy panting
- Rapid heart rate
- High body temperature
- Restlessness / anxiety
- Vomiting
⚠ If your dog ate hops (beer brewing)
Act immediately — don't wait for symptoms.
- Call your vet or a pet poison helpline right away.
- Note how much was eaten and when.
- Do not induce vomiting unless a professional tells you to.
Hops are an unusual entry on a pet toxin list because almost nobody encounters them except home brewers — and among home brewers, hops poisoning is a well-known and genuinely lethal risk. The danger is not the alcohol; it is a reaction that sends body temperature soaring.
How much is safe?
There is no safe amount, and spent hops left over after brewing are the classic cause because they smell strongly of food and are usually discarded somewhere a dog can reach. Fresh hops, pellets and plugs are all toxic. Certain breeds appear far more susceptible — Greyhounds and other sighthounds, and northern breeds such as Huskies, Malamutes and Saint Bernards — and dogs with a history of malignant hyperthermia are at particular risk.
What happens if a dog eats too much?
The hallmark is a rapid and extreme rise in body temperature, sometimes above 108°F, which is high enough to damage organs within a short time. Alongside it come heavy panting, restlessness and anxiety, a racing heart, vomiting, muscle tremors and, as it progresses, seizures and collapse. Signs often begin within an hour or two of ingestion and escalate quickly.
⚠ What to do if your dog ate hops (beer brewing)
This is an immediate emergency — drive in, do not monitor at home, and call en route (ASPCA 888-426-4435 · Pet Poison Helpline 855-764-7661). Say the word 'hops' explicitly, because it tells the team to prepare for hyperthermia. Do not plunge your dog into ice water; uncontrolled cooling causes its own problems. Treatment involves controlled cooling, sedation and sometimes a specific muscle relaxant, and survival depends heavily on how fast the temperature is brought down.
⚠️ Worried your pet got into this?
Frequently asked questions
I brew at home — how should I dispose of spent hops?
In a sealed bin your dog cannot open, and never on an accessible compost heap. This single habit prevents most reported cases.
Is beer itself as dangerous as raw hops?
Beer contains far less hop material, so the alcohol tends to be the bigger issue there. Spent brewing hops are the concentrated, life-threatening form.
More foods for dogs
By the CanMyPet Editorial Team · Reviewed against ASPCA Animal Poison Control, the American Kennel Club (AKC) and Pet Poison Helpline · Last updated July 31, 2026.
Sources
- ASPCA — People Foods to Avoid Feeding Your Pets
- American Kennel Club — Dog Nutrition
- Pet Poison Helpline — Poison List