Are Hops Toxic to Dogs? Brewery Hazard Warning

Name: Are Hops Toxic to Dogs? Brewery Hazard Warning
Creator: Dr. Zubair Khalid

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-10-03

Is hops plant toxic to dogs? Yes. Hops (Humulus lupulus) are toxic to dogs, and the reaction can be severe and fast [1]. Ingestion can trigger a dangerous rise in body temperature called malignant hyperthermia, which is a medical emergency [1][2].

This article is educational and is not a substitute for veterinary diagnosis or treatment.

Quick Answer

Hops are toxic to dogs, and all parts of the plant plus dried hops and spent brewery hops carry risk [1].
The most serious effect is a rapid, dangerous rise in body temperature along with heavy panting and a fast heart rate [1][2].
Signs often start within 2 to 8 hours after ingestion [3].
Call your veterinarian, the ASPCA Animal Poison Control Center at (888) 426-4435, or Pet Poison Helpline at (855) 764-7661 right away.
Do not induce vomiting unless a veterinarian tells you to.

Are Hops Plants Poisonous to Dogs?

Yes. Hops are listed as toxic to dogs, with reported signs of panting, high body temperature, seizures, and death [1]. The toxic principle is not fully identified, which means there is no simple antidote and treatment has to focus on supporting the dog and controlling the overheating [1].

The danger is not limited to one part of the plant. The vine, leaves, cones, dried hops, and used brewing hops can all cause problems. In real cases, dogs have been poisoned after eating hops in many forms, including hops used for home brewing and hops discarded after brewing [2][3].

Are Hops Vines or Leaves Poisonous to Dogs?

Any part of the hops plant should be treated as a hazard. The toxicity record for hops does not single out one safe part, and the plant as a whole is listed as toxic to dogs [1]. If your dog chews on a hops vine or eats fallen leaves, treat it as a possible poisoning and call for advice.

Are Dried Hops Poisonous to Dogs?

Dried hops are a major concern because they are concentrated and often stored in ways dogs can reach. Home brewers commonly keep dried hops in bags, and spent hops are sometimes composted or left in open containers. Cases of hops toxicosis in dogs have involved both fresh and dried hops, and the reaction can be severe regardless of the form [2][3].

How Much Hops Is Toxic to Dogs?

There is no reliable safe amount, and no specific toxic dose is established for dogs. The toxic principle in hops is unknown, so a threshold dose cannot be given [1]. Some dogs have developed severe signs after eating what looked like a small amount, while others have had milder reactions. Because the reaction can escalate quickly, any known hops ingestion should be treated as urgent.

What Hops Do in the Body

The exact way hops cause poisoning in dogs is not fully understood [1]. What veterinarians do know is that the result can look like malignant hyperthermia, a state where the body overheats and cannot cool itself down. This is not simple heat exhaustion from a hot day. It is a chemical reaction triggered by the plant.

In affected dogs, body temperature and heart rate climb, sometimes to dangerous levels. In one review of 71 dogs with hops poisoning, the most common signs at presentation were hyperthermia and a fast heart rate, and the dogs that did not survive had significantly higher temperatures and heart rates than the survivors [2]. That pattern tells you the degree of overheating matters a great deal.

This is why hops poisoning is treated as a time-critical emergency. The longer a dog stays overheated, the more strain is placed on the heart, brain, and other organs.

Signs of Hops Poisoning in Dogs

Signs can appear quickly, and they can worsen fast. In one large review, most symptomatic dogs developed signs between 2 and 8 hours after eating hops [3].

Watch for:

Heavy, frantic panting
Body temperature that feels very hot to the touch
Fast heart rate
Vomiting
Restlessness, agitation, or distress
Tremors, wobbliness, or stumbling
Seizures
Collapse or unresponsiveness

In a review of 177 dogs, the most common signs reported were rapid breathing, high body temperature, and vomiting [3]. Severe hyperthermia above 106°F developed in 8 dogs, and 3 of those dogs did not survive [3]. That number shows how quickly this can turn deadly.

If you see any of these signs after possible hops exposure, do not wait to see if your dog improves on its own.

What to Do Right Now

Act immediately. Minutes matter with this poisoning.

Move your dog away from the hops and into a cool, shaded area.
Call your veterinarian, the ASPCA Animal Poison Control Center at (888) 426-4435, or Pet Poison Helpline at (855) 764-7661.
Tell them what your dog ate, how much you think it ate, and when it happened.
Do not induce vomiting unless a veterinarian tells you to.
Do not give human medications, ice baths, or alcohol rubs unless a veterinarian directs you.
If your dog is having a seizure, keep it away from stairs and furniture, and do not put your hands near its mouth.

If your dog is collapsed, struggling to breathe, or having a seizure, go to the nearest emergency veterinary hospital now. Call ahead so the team can prepare.

If you are not sure whether your dog ate something toxic, this guide on what to do when a dog ate a toxic plant walks through the first steps. You can also review a broader list of plants poisonous to dogs to check your yard and home.

How Veterinarians Treat Hops Poisoning

Treatment focuses on cooling the dog safely and supporting the body while the toxin wears off. There is no specific antidote [1].

Your veterinarian may:

Measure body temperature and heart rate right away
Start active cooling with cool water, fans, and intravenous fluids
Give medications to control seizures, tremors, or agitation
Provide oxygen and monitor heart rhythm
Run blood work to check organ function and electrolyte balance
Hospitalize your dog for close monitoring

The dose of any medication is calculated by the veterinarian based on your dog's weight and health. Never give a medication at home based on a guess.

Cooling must be done carefully. Cooling a dog too fast or too aggressively can cause its own problems, so this is best done under veterinary supervision.

Outlook After Hops Ingestion

The outlook depends on how much was eaten, how high the body temperature climbed, and how fast treatment started.

In one review of 71 dogs, 59 (77%) survived [2]. In another review of 177 dogs where outcomes were known for 83 cases, 79 (95.2%) survived [3]. These numbers sound encouraging, but they come from cases where owners and veterinarians acted. The dogs that did poorly tended to have higher temperatures and heart rates, and time to presentation was shorter in survivors [2].

The clear message is that fast action improves the odds. If you suspect hops ingestion, get help right away instead of waiting for signs to appear.

Prevention and Safer Alternatives

Prevention is straightforward once you know where the risk lives.

Store all hops, including dried hops and brewing supplies, in sealed containers your dog cannot reach.
Keep spent hops out of compost piles, open buckets, and yard waste your dog can access.
Do not leave your dog unattended near a hops vine or home brewing area.
If you brew beer at home, treat brew day like a hazard day and keep your dog in another room.
Tell houseguests and family members about the risk so no one leaves hops within reach.

If you want to grow climbing plants in your yard, choose dog-safe options. Your veterinarian or a poison control service can help you check a specific plant before you bring it home.

Other common household and yard hazards deserve the same attention. If your dog eats something questionable outdoors, this article on a dog eating a mushroom explains how to judge the risk. For fruit, this guide on whether dogs can eat plums covers the pit danger. And if your dog grabs a frog in the yard, this piece on a dog eating a frog covers what to watch for.

Limitations and When to Contact a Veterinarian

No article can tell you how your individual dog will respond. The amount eaten, the dog's size, and the time since ingestion all change the picture, and only a veterinarian who examines your dog can give real guidance.

Contact a veterinarian the same day if:

You know or suspect your dog ate hops, even if it seems fine right now
Your dog has vomited once and otherwise looks normal
You are unsure how much was eaten

Go to an emergency hospital now if:

Your dog is panting heavily or feels very hot
Your dog is having a seizure, tremoring, or collapsing
Your dog is unresponsive, weak, or struggling to breathe
Signs started more than an hour ago and are getting worse

Call the ASPCA Animal Poison Control Center at (888) 426-4435 or Pet Poison Helpline at (855) 764-7661 for guidance at any hour. A routine visit is reasonable once your dog has recovered, to check organ function and confirm there are no lasting effects.

Frequently Asked Questions

Can a dog survive hops poisoning?

Yes, many dogs survive with fast treatment. Survival rates in published case reviews are high, but the dogs that did worst had very high body temperatures and fast heart rates, so speed of care matters most.

Do all dogs react the same way to hops?

No. Some dogs develop severe overheating while others have milder signs. Because the toxic principle is unknown, there is no way to predict which dog will have a severe reaction, so every known exposure should be treated as urgent.

Can my dog get sick from licking beer or drinking from a brewing bucket?

Yes, this is a real risk. Hops residue and liquid from brewing can contain the same toxic compounds, and dogs have been poisoned after access to brewing materials. Keep your dog away from buckets, spills, and fermenting equipment.

Should I make my dog vomit after eating hops?

No, not unless a veterinarian tells you to. Inducing vomiting at home can cause harm, and with hops poisoning the priority is getting veterinary care and cooling the dog safely.

Are hops essential oils or supplements dangerous to dogs?

Hops in any concentrated form should be kept away from dogs. Hops extracts and oils are used in supplements and other products, and concentrated forms carry the same concern as the plant itself. If your dog gets into any hops product, call poison control or your veterinarian.

References

Toxic and Non-toxic Plants: Hops. ASPCA Animal Poison Control Center.
Retrospective analysis of hops toxicosis in dogs (2002-2014): 71 cases. Journal of veterinary emergency and critical care (San Antonio, Tex. : 2001), 2022.
A retrospective evaluation of hops ingestion in 177 dogs (2005-2018). Journal of veterinary emergency and critical care (San Antonio, Tex. : 2001), 2023.