Vet Insights: 5 Surprising Ways Marijuana Could Poison Your Dog

With marijuana legalization spreading, accidental exposure in dogs has sharply increased. Pet owners need to understand the hidden dangers of marijuana poisoning to protect their canine companions.

While marijuana may be harmless to humans, even small amounts of THC can be toxic to dogs. Ingesting it can lead to serious health risks, including disorientation, tremors, and potentially life-threatening complications.

This article educates dog owners on the risks of marijuana intoxication, how to recognize warning signs, and what to do in an emergency.

Why Dogs Are More Vulnerable to Marijuana Intoxication Than Humans

Cannabis, commonly known as marijuana, contains the psychoactive compound tetrahydrocannabinol (THC), which affects the brain and nervous system. Dogs have more cannabinoid (CB1) receptors than humans, making them far more sensitive—and vulnerable—to THC’s toxic effects.

Cannabis contains other cannabinoids like cannabidiol (CBD), which are typically non-psychoactive and often marketed as safe for pets. However, even trace amounts of THC in some CBD products can pose a risk to dogs.

How Dogs Commonly Get Cannabis Poisoning

This section outlines the most common—and often surprising—ways dogs can be exposed to marijuana and develop toxicosis. These include:

1. Ingesting concentrates (like oils and butters): Dogs may consume cannabis-infused oils or butters left out on counters, leading to high levels of THC exposure in a small dose.
2. Eating plant material (whether fresh or dried varieties): Chewing on marijuana leaves, buds, or discarded joints can cause intoxication due to the presence of THC in raw plant matter.
3. Consuming edibles (whether baked goods, gummies, or chocolate): Cannabis edibles often contain concentrated THC and other dangerous ingredients for dogs, like chocolate or xylitol, increasing the risk of severe poisoning.
4. Ingesting human feces containing THC metabolites: Some dogs may eat human feces that still contain active THC metabolites, especially from users of edibles or high-dose products—an often-overlooked source of exposure.
5. Inhaling secondhand smoke or vapor: While less common, dogs can be affected by inhaling cannabis smoke or vapor, which may cause disorientation, lethargy, or respiratory distress.

Cannabis exposure in dogs is often accidental, especially among curious pets drawn to the smell or taste of edibles and other products. Even well-meaning owners may overlook common household sources that pose a serious risk.

How to Tell If Your Dog Has Marijuana Poisoning

Symptoms of marijuana toxicity in dogs typically appear within 30 minutes to 12 hours after exposure. These effects can last from a few hours to several days, often between 24 and 72 hours.

Most common indicators of cannabis intoxication in dogs

• Vomiting and drooling: Early signs of nausea or gastrointestinal distress following ingestion.
• Ataxia (staggering or "drunk" gait): The most frequently reported symptom—dogs may have trouble walking or maintaining balance.
• Tremors or shaking: Mild to moderate muscle tremors can occur due to THC’s effects on the nervous system.
• Lethargy or sedation: Affected dogs often appear unusually tired, sluggish, or unresponsive.
• Increased sensitivity to stimuli (hyperesthesia): Dogs may overreact to touch, sound, or light, appearing jumpy or anxious.
• Altered heart rate and blood pressure: Marijuana can either slow down or speed up heart rate and affect blood pressure, depending on dose and dog size.
• Urinary incontinence (dribbling urine): A surprisingly common symptom where dogs involuntarily urinate while resting or walking.
• Slowed breathing: Respiratory rate may decrease, especially in cases of high exposure, posing a potential danger.

Less common or severe signs of THC toxicity in dogs

• Dilated pupils: A sign of overstimulation or neurological involvement.
• Agitation or hyperactivity: Some dogs may appear restless or excessively energetic instead of sedated.
• Seizures: Rare but serious, more likely with synthetic cannabinoids or large doses.
• Coma: Extremely rare but life-threatening, usually associated with severe toxicity or combined substances.

How Do Vets Diagnose THC Poisoning in Dogs?

Diagnosing marijuana toxicity in dogs relies heavily on an accurate medical history and observed clinical signs. Human drug tests are unreliable for dogs, and veterinary-specific tests can take time to deliver results. 

That’s why pet owners must be honest with their veterinarian if cannabis exposure is suspected—prompt, accurate information can lead to faster, more effective treatment.

Being honest with your veterinarian about possible marijuana exposure is essential for your dog’s safety. Veterinarians are not required to report cannabis-related incidents to law enforcement, so there’s no risk in disclosing the truth. Clear communication helps avoid unnecessary tests, reduces costs, and ensures faster, more accurate treatment.

How Do Vets Treat Marijuana Toxicity in Dogs?

Marijuana toxicity in dogs has no direct antidote. Instead, treatment involves supportive care to manage symptoms and stabilize the dog until the THC clears from their system.

If marijuana ingestion occurred within the last 30 minutes, a veterinarian may attempt to induce vomiting. However, this can be challenging due to marijuana’s anti-emetic or anti-nausea effects and may carry a risk of aspiration, especially if the dog is already sedated.

Activated charcoal may be used to limit THC absorption in more serious cases, though it’s usually unnecessary for mild exposures. IV fluids are commonly given to support hydration, stabilize blood pressure, and aid in toxin elimination.

Supportive care includes providing a quiet, low-stimulation environment and, in some cases, confining the dog to prevent self-injury. Veterinarians closely monitor vital signs—such as heart rate, breathing, temperature, and blood pressure—and may use warming or cooling therapy as needed.

Veterinarians may use medications to manage specific symptoms such as agitation, tremors, seizures, or persistent vomiting. In severe cases, intralipid therapy, an intravenous fat emulsion, may be used to help absorb THC, though its effectiveness remains debated.

If marijuana is consumed in an edible, veterinarians also assess for co-ingested toxins like chocolate, xylitol, or high-fat ingredients. These substances can pose additional risks and may require separate treatment approaches. Consulting a qualified pet homeopath can also be beneficial.

What Natural Remedies Support a Dog’s Recovery from Marijuana Poisoning?

Premium natural products like Zumalka’s TONICPET #4 and GENERAL DETOXIFICATION KIT may support your dog’s recovery from cannabis toxicity. Here’s how these products can help:

TONICPET #4

Zumalka’s TONICPET #4 is a natural product that supports immune function, healthy circulation, and body temperature regulation in dogs. It’s especially beneficial for pets experiencing fatigue, weakness, or recovery from injuries like sprains, strains, or bruises.

GENERAL DETOXIFICATION KIT

Zumalka’s GENERAL DETOXIFICATION KIT combines five natural products—including KIDNEY DRAINER, LIVER DRAINER, LYMPH DRAINER, ENVIRONMENTAL DETOX, and PROBIOPET—to help eliminate toxins and support vital organ function. By cleansing the liver, kidneys, and lymphatic system, this kit promotes a stronger immune response and overall wellness in your pet.

Prognosis and Recovery for Dogs with Marijuana Poisoning

With prompt and appropriate treatment, marijuana intoxication in dogs is rarely fatal. However, severe cases, especially those involving concentrated products, edibles, or additional toxins, can pose greater risks and have occasionally led to fatalities.

Most dogs recover from marijuana toxicity within 24 to 72 hours with proper veterinary care or expert pet homeopathic guidance. However, because THC is stored in fat, its effects may linger longer in some cases, especially after high-dose ingestion.

Protecting Your Dog from Accidental Cannabis Exposure

Preventing marijuana intoxication in dogs is simple with a few precautions. To keep your pet safe, follow these key tips:

Proactively store marijuana products to keep them safely out of your pet’s reach.

Store all cannabis products, including edibles, oils, and raw plant material, securely out of your dog’s reach, just as you would with medications or household toxins. Use high cabinets or locked drawers to prevent accidental ingestion and ensure your pet’s safety.

A little caution can make a big difference in keeping your dog safe.

Keep edibles safely out of reach, as their sweet smell and taste make them especially appealing to pets. If smoking or vaping cannabis, ensure your dog stays in a separate, well-ventilated area to avoid secondhand exposure.

Properly dispose of marijuana products and related waste to prevent accidental ingestion by pets.

Always dispose of cannabis waste securely to prevent accidental pet exposure. When walking your dog, stay alert for discarded edibles or human feces that may contain THC, especially in public areas.

Key Takeaways

As marijuana becomes more accessible, the risk of accidental exposure in pets, especially dogs, is on the rise. Recognizing signs like lethargy, incoordination, tremors, or urinary incontinence is essential for early intervention. 

If you suspect marijuana toxicity, consult a veterinarian or qualified pet homeopathy expert immediately to ensure safe and effective care. Always remember that providing accurate information about the possible exposure is the fastest and most effective way to help your pet recover.

FAQs

How much marijuana is toxic to a dog?

Dogs can be harmed by even tiny doses of marijuana, especially high-THC products. The size of a dog and the type of exposure affect toxicity. Consult a veterinarian or pet homeopathic specialist right away.

How do you help a dog come down from a high?

To help a dog recover from a marijuana high, keep them calm in a quiet, safe space and monitor them closely. Seek veterinary care immediately for supportive treatment, especially if symptoms worsen or involve edibles. Consulting a qualified pet homeopath is also beneficial.

What happens if a dog is exposed to marijuana smoke?

If a dog inhales marijuana smoke, they may experience symptoms like disorientation, lethargy, or uncoordinated movement. Secondhand exposure can still be harmful. Always keep pets in a separate, well-ventilated area.

Can dogs recover from marijuana poisoning?

Yes, most dogs recover fully from marijuana poisoning with prompt and appropriate care. Recovery typically occurs within 24 to 72 hours. Immediate veterinary attention helps manage symptoms and prevent complications from high-THC or edible exposure. Having our GENERAL DETOXIFICATION KIT on hand can also be helpful to speed up recovery.

How do you treat toxicity in dogs at home?

At-home treatment for dog toxicity is not recommended without professional guidance. If you suspect poisoning, contact a veterinarian or pet homeopathy expert immediately. Early intervention is critical to ensure safe and effective care. However, using the homeopathic GENERAL DETOXIFICATION KIT is safe and effective for intoxication situations like this.

How do you flush poison out of a dog's system?

Flushing poison from a dog’s system should be done under veterinary supervision. Treatments may include IV fluids, activated charcoal, or detox remedies. Prompt professional care ensures safe toxin elimination and supports vital organ function during recovery. Zumalka’s TONICPET #4 and GENERAL DETOXIFICATION KIT are helpful and natural alternatives.

How soon will a dog show signs of poisoning?

A dog may show signs of poisoning within 30 minutes to 12 hours after exposure, depending on the substance. Symptoms can develop quickly, so immediate veterinary attention is crucial for proper diagnosis and treatment. Consulting a qualified pet homeopath can also help.

What to give a dog that ate drugs?

If your dog ate drugs, do not attempt home remedies. Contact a veterinarian or emergency clinic immediately. Treatment may include inducing vomiting, activated charcoal, IV fluids, or medications, depending on the substance and severity of exposure.

Should you give water to a poisoned dog?

You can offer small amounts of water to a poisoned dog, but never force it. Avoid home treatments and contact a veterinarian immediately. Professional care is essential for safe, effective poisoning management.

What to do if your dog accidentally gets high?

Keep your dog calm in a quiet area and monitor their symptoms if they inadvertently get high. For advice and supportive care to guarantee a safe recovery, get in touch with your veterinarian or an emergency clinic right away. Expert pet homeopathic advice may also be beneficial.

Can dogs recover from drug toxicity?

Yes, dogs can recover from drug toxicity with prompt and appropriate care. Recovery depends on the substance, dose, and timing of treatment. Immediate veterinary attention greatly improves outcomes and helps prevent serious complications. Consulting a pet homeopathy specialist can also help.

About the author

Suzie Cyrenne

HOMEOPATH & CO-FOUNDER OF ZUMALKA

Suzie Cyrenne has dedicated more than 20 years of her life in making and improving natural animal health solutions in the global setting.

Being the co-founder of Zumalka, Suzie is a forerunner in enhancing the lives of pets through natural and homeopathic options using the knowledge she has gained from the Classical Homeopathy School in Quebec.

Through the guidance of her mother-in-law and fellow natural health expert, Denyse Lessard, Suzie constantly devotes herself to create premium pet products that are aimed at dealing with the root causes of wellness problems and not just their symptoms.

Besides immersing herself in books, personal development and visiting new places, Suzie also enjoys keeping herself in tiptop shape by snowboarding and taking daily hikes with her husband and Zumalka co-founder, Matt Lessard, and their Golden-Doodle, Westin.

Find out more about Suzie when you click HERE.