Can A Dog Get High From Smelling Weed? | Risks, Signs, Steps

Yes, dogs can show mild THC intoxication from secondhand cannabis smoke, and stronger illness is more common after eating cannabis products.

If your dog was near cannabis smoke and now seems “off,” don’t wait around hoping it passes. Dogs are more sensitive to THC than people, and even smoke exposure can cause signs in some dogs. The bigger risk is when a dog also eats a gummy, brownie, roach, or vape oil residue while you’re not watching.

That mix-up happens a lot. A room may smell like weed, so owners assume smell alone caused the problem, when the dog actually licked or ate something. The next steps are the same either way: move your dog away from smoke, check what they may have reached, and call your vet or poison help line right away if signs start.

This article gives you the plain answer, what “high” can look like in dogs, what raises the danger level, and what to do in the first hour. It also points out the red-flag signs that call for urgent care.

What “High” Means In A Dog

When people say a dog is “high,” they usually mean THC intoxication. THC is the main psychoactive part of cannabis. In dogs, it can affect balance, alertness, heart rate, body temperature, and bladder control. A dog may look sleepy and wobbly, or restless and jumpy. Both patterns can happen.

The word “smelling” can be misleading here. Smell by itself is not the same as absorbing smoke. A dog can sniff a bag or a room and smell cannabis with no intoxication at all. The issue starts when THC reaches the body through inhaled smoke or vapor, or much more often, through eating a cannabis product.

Taking In Weed Smoke Around Dogs: What Happens

Secondhand smoke can cause mild signs in dogs. Cornell’s canine health page states that inhalation can produce mild signs, while ingestion is the usual route behind stronger illness. That tracks with what vets see in practice: the dog that ate an edible or concentrate tends to be sicker than the dog that was only in a smoky room.

Smoke exposure still matters. Small dogs, puppies, older dogs, and dogs with breathing or heart problems may react harder. Heavy smoke in a small room raises the odds. Vaping can also be risky, especially if a pet gets into cartridges or residue.

If the dog was close enough to smoke that you can smell it on their fur, treat the exposure as real. Open windows, move the dog to fresh air, and start watching for signs over the next few hours. Also scan the room. Edibles, ash, joints, and dropped pieces are often the real source.

Why Dogs Can React More Strongly Than People

Dogs have a different sensitivity profile to THC. Veterinary references note species differences in receptor distribution, and dogs can show clinical signs at low dose ranges. That is one reason owners get surprised by how dramatic the signs can look after what seemed like a small amount.

Another factor is product strength. Modern cannabis products vary a lot in THC concentration. Plant material, edibles, oils, and concentrates can be worlds apart. A tiny amount of a strong product may hit much harder than people expect.

For a detailed veterinary overview of THC toxicosis and product potency ranges, see the MSD Veterinary Manual page on THC toxicosis in dogs and cats.

How Exposure Happens Most Often

Many owners ask about smoke first, yet ingestion is the route that causes most serious cases. Dogs grab what smells like food. Gummies, brownies, cookies, chocolates, butter, and oils are easy targets. Some products bring extra poison risks, like chocolate or xylitol, on top of THC.

There is also plant material, resin, vape liquids, and discarded roaches. Concentrates can be much stronger than dried flower. Even a small smear can be enough to cause a rough night.

Cornell’s canine health guidance also notes a point many owners miss: secondhand smoke can lead to mild signs, but edible exposure is a common route for heavier intoxication. Their page also warns owners to keep products stored out of reach and avoid smoking around pets. See Cornell’s Cannabis (THC) intoxication in dogs page for that breakdown.

Exposure Routes And Risk Level In Dogs

The table below gives a quick way to sort what happened and how worried you should be. It is not a diagnosis tool, though it can help you decide how fast to act while you call your vet.

Exposure Route	Typical Risk Level	What You Should Do Right Away
Brief smell of cannabis in room, no smoke cloud, no product contact	Low	Move dog away, monitor, check area for dropped product
Secondhand smoke in open area for a short time	Low to Moderate	Fresh air, watch for wobbling or sedation, call vet if signs start
Secondhand smoke in small closed room	Moderate	Fresh air, monitor closely for several hours, call vet for guidance
Vape aerosol exposure only (no cartridge access)	Low to Moderate	Fresh air, monitor, inspect area for spills and cartridge leaks
Licked ashtray, roach, grinder, or residue	Moderate to High	Call vet or poison line now; signs may build over time
Ate dried flower or resin	Moderate to High	Call vet now; keep packaging or estimate amount if possible
Ate edible (gummy, brownie, cookie, chocolate product)	High	Urgent call to vet/ER; extra ingredients may add danger
Ate concentrate, oil, tincture, or vape cartridge liquid	High	Urgent care now; potency may be much higher than plant material

Signs Your Dog May Be Intoxicated

Signs can start within minutes after inhalation or later after ingestion. Cornell notes signs may begin within 30 minutes to several hours and can last up to 72 hours in some cases. That long tail is one reason a “wait and see” plan can turn into a rough situation.

Common signs include wobbling, acting dazed, drooling, vomiting, dilated pupils, and urinary dribbling. Some dogs become quiet and limp. Others pace, whine, or react hard to sounds and touch. Severe cases may involve tremors, seizures, or coma.

The ASPCA also lists cannabis as toxic to dogs and includes serious signs such as incoordination, low body temperature, seizures, coma, and rare death. Their toxic plant page is a good plain-language reference for owners: ASPCA Poison Control marijuana listing.

Do Not Rely On A Home Drug Test

People sometimes try a human urine test kit on a dog. That can mislead you. Veterinary references note that human urine drug screens are not reliable for diagnosing cannabis exposure in dogs, and false negatives are common. A negative strip does not rule it out.

Your vet will lean more on history, the signs they see, and what the dog may have reached. If you know the product type, bring the package or a clear photo. That can save time.

What To Do In The First Hour

Start with fresh air and calm handling. Keep your dog away from smoke, noise, stairs, and anything they could fall from. Dim rooms help dogs that are jumpy or extra sensitive to touch and sound.

Next, gather facts. What product was nearby? Was it flower, edible, cartridge, oil, or a vape? About how much is missing? Did it contain chocolate, xylitol, or caffeine? A short note on your phone helps when you call the clinic.

Then call your veterinarian, emergency vet, or a pet poison service. Be direct and honest about cannabis exposure. Vets are trying to treat your dog, not judge you. Clear details help them choose the safest plan faster.

What Not To Do At Home

Do not try to make your dog vomit unless a vet tells you to do that. Home methods can make things worse, especially if your dog is sleepy, wobbly, or not swallowing well. Choking and aspiration are real risks.

Do not give human “detox” products, milk, oils, or random snacks. Those do not remove THC in a safe, predictable way. Some can add stomach trouble and muddy the picture for the vet team.

Do not wait for a dog to “sleep it off” if signs are growing. THC intoxication can swing from mild to scary, and edible ingredients may create a second problem.

When It Is An Emergency

Go to urgent veterinary care right away if your dog cannot stand, has repeated vomiting, trouble breathing, tremors, seizures, collapse, or does not respond normally to you. Puppies, senior dogs, and dogs with heart or breathing disease deserve a lower threshold for urgent care.

If an edible may contain chocolate or xylitol, treat it as time-sensitive from the start. Those ingredients can be dangerous on their own. Cannabis is only part of the problem in many edible cases.

The AVMA cannabis use and pets page also directs owners to contact a veterinarian right away if exposure is known or suspected.

Symptom Severity And What Owners Should Do Next

Use this chart for quick triage while you arrange care. It does not replace a call to your vet.

Signs You See	Severity Level	Next Step
Mild sleepiness, mild glassy eyes, still walking well	Mild	Call vet for guidance, monitor in a safe quiet room
Wobbling, disorientation, drooling, urinary dribbling	Moderate	Same-day vet call; urgent visit if worsening
Repeated vomiting, marked agitation, can’t settle	Moderate to High	Emergency vet visit today
Can’t stand, collapse, slow response, tremors, seizure, breathing trouble	High	Emergency vet now

How Vets Usually Treat Cannabis Intoxication In Dogs

Treatment depends on the route, timing, product type, and how the dog looks on exam. Many dogs need monitoring, fluids, warmth, nausea control, and help staying safe while the drug wears off. More severe cases may need stronger monitoring and hospital care.

If the exposure was recent and your dog is stable, the vet may choose a decontamination step. That call is case by case. It changes fast if the dog is already very sleepy or if extra toxins are involved.

Most dogs recover with care, though the experience can be rough and long. Cornell notes many dogs recover within one to two days with care, while signs may linger longer in some cases. Getting help early tends to make the course smoother.

How To Prevent It Next Time

Store all cannabis products high up and locked away. That includes flower, gummies, brownies, oils, vape carts, and empty wrappers. Dogs raid bags, coat pockets, bedside drawers, and trash cans more often than people think.

Do not smoke or vape around pets. If you use cannabis, do it away from your dog and let the room clear before they come back in. Ashtrays, roaches, and cartridges should go into a closed trash container right away.

If guests visit, ask them to keep products zipped and off the floor. A lot of pet poison calls start after parties, road trips, or camping, when routines slip and items end up within reach.

One final point: the FDA has not approved THC products for veterinary patients, and it also warns that accidental ingestion events in animals are documented in scientific literature. That is one more reason to treat any exposure seriously and call your vet early. See the FDA’s cannabis and cannabis-derived products page for current federal safety context.

Plain Answer For Pet Owners

Yes, a dog can get high from inhaling weed smoke, and the signs are usually milder than cases where the dog eats a cannabis product. Since owners often miss a hidden edible or residue exposure, treat new wobbling, sedation, or odd behavior after cannabis contact as a vet call. Quick action can spare your dog a longer, harder episode.