Table of contents
Key Takeaways
- Marijuana is toxic to dogs and can cause serious symptoms ranging from disorientation and loss of bladder control to seizures and in severe cases respiratory failure. If your dog has ingested any amount, contact your vet immediately.
- Edibles are significantly more dangerous than raw marijuana because of the additional toxicities involved, including high-fat ingredients that can cause pancreatitis and chocolate that carries its own serious toxicity risks.
- There is no judgment from our vets. Being honest about what your dog ate and how much allows for faster, more targeted treatment. Withholding that information slows the process down when time matters most.
It happens more often than you might think, and it's happening more frequently as marijuana becomes legal across more of the country. A dog gets into a stash, snags an edible off a coffee table, or finds something on the ground during a walk in the park. One moment everything is normal, and a short while later your dog is acting very strangely and you're not sure what to do.
First things first: if your dog ate marijuana, there's no judgment here. Our vets have seen it all, and the only thing that matters in this moment is getting your dog the help they need. What you do in the next few hours can make a significant difference in how quickly and fully your dog recovers.
What marijuana does to a dog's body
Dogs and humans process THC, the primary psychoactive compound in marijuana, very differently. Dogs have a higher density of cannabinoid receptors in their brains than humans do, which means they are significantly more sensitive to the effects of THC. What might produce a mild buzz in a person can produce profound and distressing neurological effects in a dog, even from a relatively small amount.
THC affects the central nervous system, and the symptoms a dog experiences reflect that. The onset of symptoms typically occurs within 30 minutes to an hour of ingestion, though it can take longer if the marijuana was consumed in a food product that needs to be digested first.
Signs of marijuana toxicity in dogs
The symptoms of marijuana toxicity in dogs are wide-ranging and can be alarming to witness. Common signs include:
Profound disorientation and stumbling. Dilated pupils. Glassy or unfocused eyes. Excessive drooling. Vomiting. Urinary incontinence, meaning a dog that is house-trained suddenly loses control of their bladder. Sensitivity to sound and movement, where normal household noises or motion cause an exaggerated startle response. Lethargy and an inability to hold themselves upright. Slow heart rate. In more serious cases, tremors, seizures, and in the most severe situations, respiratory depression where the dog's breathing slows to a dangerous degree.
That last point is worth emphasizing. Dogs can ingest enough marijuana to where they stop breathing on their own and require mechanical ventilation to survive. This is not a common outcome, but it is a possible one, and it underscores why marijuana ingestion in dogs should always be treated as a medical concern rather than something to wait out at home.
Why edibles are significantly more dangerous than raw marijuana
If there is one message our vets want every dog owner to take away from this topic, it's that edibles represent a substantially higher level of danger than raw marijuana flower. The reasons are layered, and each one adds to the overall risk.
The concentration problem
Edibles are typically made with concentrated cannabis products like butter, oil, or distillate that contain far more THC per gram than raw plant material. A dog that gets into an edible may be consuming a dose of THC that is dramatically higher than what they'd get from chewing on a bud, and the effects can be correspondingly more severe.
The fat toxicity problem
Many cannabis edibles are made with high-fat ingredients. Cannabutter, which is butter infused with cannabis, is a common base for homemade edibles. Our vets have seen dogs consume an entire pound of marijuana-laced butter in one sitting. The consequences of that go well beyond THC toxicity.
Consuming a large amount of fat in a short period can trigger a condition called pancreatitis, which is inflammation of the pancreas. The pancreas produces digestive enzymes, and when it becomes inflamed, those enzymes can begin to damage the organ itself and surrounding tissue. Pancreatitis ranges in severity from uncomfortable to life-threatening, and severe cases require hospitalization, IV fluids, pain management, and sometimes extended veterinary care. A dog dealing with both marijuana toxicity and pancreatitis simultaneously is in a serious situation.
The chocolate problem
Many edibles are baked into or combined with chocolate products. Brownies, chocolate bars, chocolate candies, and truffles are among the most common vehicles for cannabis edibles, and every single one of them creates a double toxicity risk for dogs.
Chocolate contains theobromine and caffeine, both of which are toxic to dogs. The severity of chocolate toxicity depends on the type of chocolate, with dark chocolate and baking chocolate being significantly more dangerous than milk chocolate, and the amount consumed relative to the dog's body weight. Symptoms of chocolate toxicity include vomiting, diarrhea, increased heart rate, muscle tremors, and in severe cases seizures and cardiac arrhythmias.
A dog that has eaten a marijuana chocolate edible is potentially dealing with THC toxicity, chocolate toxicity, and depending on the fat content, the beginnings of pancreatitis, all at once. This is a genuine emergency and warrants immediate veterinary attention.
What to do if your dog eats marijuana
Acting quickly and being honest with your vet are the two most important things you can do in this situation.
Contact your vet immediately
Do not wait to see how your dog responds before reaching out. The window for the most effective interventions, including inducing vomiting to prevent further absorption, is limited and closes quickly. If your dog ate marijuana within the last hour or two and isn't yet showing severe symptoms, your vet may be able to induce vomiting to reduce the amount of THC that enters the bloodstream.
For Modern Animal members, virtual care is available around the clock. If you're not sure whether what your dog ate warrants an emergency visit, reaching out through the app immediately gets you in front of a vet who can assess the situation and guide your next steps without delay. [link: virtual care]
If your dog is already showing serious symptoms including severe disorientation, difficulty breathing, tremors, or loss of consciousness, go directly to an emergency veterinary clinic without stopping to call first. Time is the critical variable in serious toxicity cases.
Be honest about what your dog ate
This is something our vets want to be very clear about: there is absolutely no judgment when it comes to marijuana ingestion. Our only concern is your dog. The more information you can provide about what your dog ate, how much, and when, the faster and more accurately your vet can assess the situation and determine the appropriate treatment.
Withholding information because you're embarrassed or concerned about judgment slows down the diagnostic process at a moment when speed matters. Tell your vet everything. What form the marijuana was in, whether it was an edible and if so what kind, approximately how much your dog may have consumed, and when you think the ingestion happened. All of this information is clinically useful.
What treatment looks like
Treatment for marijuana toxicity in dogs is primarily supportive, meaning the goal is to manage symptoms and keep the dog safe and stable while their body processes and clears the THC.
If the ingestion was recent and the dog isn't showing severe symptoms, inducing vomiting may be the first step to reduce absorption. Activated charcoal is another tool our vets use in these situations. Administered orally, activated charcoal works by binding to toxins in the gastrointestinal tract and preventing them from being absorbed into the bloodstream. It's a standard part of toxicity management for many ingested substances, including THC.
For dogs showing more significant symptoms, IV fluids help support blood pressure, maintain hydration, and support the organs as they process the toxin. Dogs that are severely affected may require hospitalization, monitoring, and in the most serious cases, respiratory support.
The good news is that the vast majority of dogs recover fully from marijuana toxicity with appropriate veterinary care. Fatalities are rare but do occur, which is why prompt treatment is so important.
Prevention: keeping your dog safe in a world where marijuana is increasingly common
As marijuana becomes legal in more states, the opportunities for accidental canine exposure increase. A few practical habits go a long way toward keeping your dog safe.
Store marijuana securely
Treat cannabis products the way you'd treat any other household item that's dangerous to pets. Keep them in closed containers, in locations your dog cannot access. Dogs are resourceful and motivated by smell, and marijuana has a distinctive odor that many dogs find interesting. A bag left on a low table or in an accessible bag is an invitation.
This applies especially to edibles, which smell like food and are particularly appealing to dogs. Brownies, cookies, and candies left within reach are an accident waiting to happen.
Be aware in public spaces
In areas where marijuana is legal, public parks and walking paths can have discarded joints, dropped edibles, or other cannabis products on the ground. Dogs investigate the world with their noses and mouths, and something found on the ground is immediately interesting. Keep your dog on a leash in public areas and watch what they're sniffing and picking up, particularly in urban areas where human foot traffic is high.
Know the signs
Familiarizing yourself with the signs of marijuana toxicity means you'll recognize them quickly if they appear. The combination of profound disorientation, stumbling, dilated pupils, and urinary incontinence in a dog that was normal an hour ago is a fairly recognizable presentation. The faster you recognize it, the faster you can act.
Marijuana toxicity in dogs is a situation that's becoming more common, not less. The best outcome always starts with fast action and honest communication with your vet. If your dog gets into your stash, an edible, or something they found on the ground, don't wait and don't hesitate to reach out. Our vets are here to help, not to judge, and getting your dog seen quickly is the single most important thing you can do.
If you think your dog may have ingested marijuana, contact us through the Modern Animal app or head to your nearest clinic right away.
Frequently Asked Questions
In most cases, no. While mild cases might seem manageable, it's very difficult for an owner to accurately assess severity at home, and the window for the most effective interventions like inducing vomiting closes quickly. Attempting to induce vomiting at home without veterinary guidance can also be dangerous if done incorrectly or if the dog is already showing neurological symptoms. Contacting your vet as soon as possible, even if your dog seems only mildly affected, is strongly recommended. All Access and Essential members can reach the Modern Animal care team virtually around the clock for immediate guidance.
There is no established safe amount. Dogs are significantly more sensitive to THC than humans due to a higher density of cannabinoid receptors in the brain, and toxicity can occur from relatively small amounts depending on the dog's size and the concentration of THC in what they consumed. Small dogs are at higher risk from the same quantity than large dogs. Edibles with concentrated THC can be toxic in amounts that might seem small. If your dog has ingested any amount of marijuana, contacting your vet is always the right call.
There is no established safe amount. Dogs are significantly more sensitive to THC than humans due to a higher density of cannabinoid receptors in the brain, and toxicity can occur from relatively small amounts depending on the dog's size and the concentration of THC in what they consumed. Small dogs are at higher risk from the same quantity than large dogs. Edibles with concentrated THC can be toxic in amounts that might seem small. If your dog has ingested any amount of marijuana, contacting your vet is always the right call.
No. Veterinarians are not mandated reporters for adult drug use, and their obligation is to your pet's health, not to law enforcement. Our vets have no interest in anything other than helping your dog recover as quickly and fully as possible. Being honest about what your dog ingested, including the type, form, and approximate amount of marijuana, allows for faster and more targeted treatment. Withholding that information out of concern about judgment or legal consequences only slows down the care your dog needs.
This is a more serious situation than marijuana alone and warrants immediate emergency veterinary care. Chocolate toxicity and marijuana toxicity together create compounding risks, and the severity depends on the type of chocolate, the amount consumed, and your dog's size. Dark chocolate and baking chocolate are significantly more dangerous than milk chocolate. Don't wait to see how your dog responds. Go directly to an emergency vet and bring the packaging of the edible if you have it, so your vet knows exactly what ingredients were involved.