Can Dogs Get a Contact High from Being Around Cannabis Smoke?

AvatarByWilliam Warren Food & Nutrition

The idea of a “contact high” is often discussed in human contexts, but what happens when our furry companions are involved? Many dog owners have wondered whether their pets can experience effects simply by being around cannabis smoke or other substances. This question taps into broader concerns about pet health, safety, and the unique ways animals metabolize various compounds.

Understanding whether dogs can get a contact high involves exploring how substances like THC interact with their bodies and what signs might indicate exposure. It also raises important considerations about the environments we create for our pets and how seemingly harmless situations could impact them differently than humans. As awareness around cannabis use grows, so does the need to clarify how it affects those closest to us, including our four-legged friends.

In this article, we will delve into the science behind contact highs in dogs, examine potential risks, and offer guidance for responsible pet care in contexts where cannabis is present. Whether you’re a curious pet owner or someone seeking to protect your dog’s well-being, understanding this topic is essential for making informed decisions.

How Dogs Can Be Affected by Cannabis Smoke

Dogs have a different physiology and metabolism compared to humans, which influences how they respond to substances like cannabis. When exposed to secondhand marijuana smoke, dogs can absorb tetrahydrocannabinol (THC) through their respiratory systems and mucous membranes. This can lead to what some describe as a “contact high,” though the effects are generally more severe and concerning than the mild euphoria experienced by humans.

Cannabinoid receptors (CB1 and CB2) in the canine brain and body interact with THC, potentially causing neurological and physiological changes. The level of intoxication in dogs depends on several factors including the amount of smoke inhaled, duration of exposure, and the dog’s size and health.

Symptoms of Cannabis Exposure in Dogs

When dogs inhale cannabis smoke, they may exhibit a range of symptoms that indicate intoxication or toxicity. These symptoms can vary in intensity and duration but typically require veterinary attention.

Common signs include:

  • Lethargy or excessive sedation
  • Loss of coordination or ataxia
  • Dilated pupils
  • Drooling or excessive salivation
  • Vomiting or nausea
  • Urinary incontinence
  • Tremors or seizures in severe cases
  • Increased heart rate or, conversely, bradycardia
  • Hypothermia (lowered body temperature)

Owners should be vigilant if their dog has been exposed to cannabis smoke, especially in enclosed spaces with poor ventilation.

Risk Factors and Vulnerability

Several factors increase the likelihood of dogs experiencing adverse effects from cannabis smoke:

  • Size and weight: Smaller dogs are more susceptible to THC due to their lower body mass.
  • Health status: Dogs with pre-existing conditions, particularly respiratory or neurological disorders, are at higher risk.
  • Duration and concentration of smoke: Prolonged exposure or high THC concentrations increase toxicity risk.
  • Age: Puppies and senior dogs may have heightened sensitivity.

Understanding these risk factors helps in preventing accidental exposure and ensuring prompt response if exposure occurs.

Comparison of THC Sensitivity: Humans vs. Dogs

Aspect Humans Dogs
THC Metabolism Efficient liver metabolism, slower onset but prolonged effects Less efficient metabolism, faster onset, potentially toxic accumulation
THC Tolerance Variable tolerance, can develop with repeated use No developed tolerance; even small amounts can be harmful
Typical Effects Euphoria, relaxation, altered perception Disorientation, sedation, neurological distress
Adverse Effects Rare in moderate use; anxiety or paranoia possible Common; can include severe toxicity and require medical intervention

Preventive Measures and What to Do If Exposure Occurs

To minimize the risk of cannabis exposure in dogs, pet owners should:

  • Avoid smoking cannabis indoors or in confined areas where pets are present.
  • Ensure cannabis products are stored securely out of reach.
  • Use well-ventilated areas if cannabis use cannot be avoided near pets.
  • Monitor pets closely after any potential exposure.

If a dog shows signs of cannabis intoxication:

  • Contact a veterinarian immediately.
  • Provide information about the type of cannabis, amount of exposure, and timing.
  • Do not induce vomiting or administer any treatments without professional guidance.
  • Keep the dog calm and in a safe, quiet environment while awaiting veterinary care.

Prompt veterinary intervention can help mitigate the effects and prevent complications.

Understanding Contact Highs in Dogs

A contact high occurs when an individual experiences the psychoactive effects of a substance indirectly, usually through inhalation of smoke or vapor in their environment. In the context of dogs, this typically refers to exposure to cannabis smoke or other substances containing tetrahydrocannabinol (THC), the primary psychoactive compound in marijuana.

Dogs have an endocannabinoid system similar to humans, which means they can be affected by cannabinoids such as THC and cannabidiol (CBD). However, due to differences in metabolism and size, dogs are more sensitive to these compounds, and exposure can lead to more pronounced and potentially dangerous effects.

How Dogs Are Exposed to THC

Dogs can experience a contact high primarily through:

  • Secondhand Smoke Inhalation: Being in close proximity to cannabis smoke can result in the dog inhaling THC-laden smoke particles.
  • Ingestion of Edibles or Plant Material: Dogs may accidentally consume cannabis edibles or raw plant material, which often contain concentrated amounts of THC.
  • Topical Exposure: Though less common, THC can be absorbed through the skin if a dog comes into contact with cannabis-infused products.

Among these, secondhand smoke is the most relevant for contact highs, as it involves passive exposure without direct ingestion.

Signs and Symptoms of THC Exposure in Dogs

Dogs exposed to THC, even indirectly, may exhibit a range of symptoms. These can vary based on the dose, the dog’s size, and individual sensitivity.

Symptom Description
Ataxia Loss of coordination and balance, resulting in wobbling or falling
Disorientation Confusion or seeming dazed behavior
Lethargy Unusual tiredness or reluctance to move
Drooling Excessive salivation
Increased Heart Rate Tachycardia, which can be dangerous in some cases
Vocalization Unusual barking, whining, or howling
Urinary Incontinence Loss of bladder control
Vomiting Emesis as a response to toxicity

Risks Associated with Contact Highs in Dogs

While the concept of a contact high suggests mild or incidental exposure, dogs are at risk for significant toxicity from even small amounts of THC. Key risk factors include:

  • Heightened Sensitivity: Dogs have more cannabinoid receptors in their brains than humans, making them more susceptible to adverse effects.
  • Respiratory Irritation: Smoke inhalation can cause coughing, respiratory distress, or exacerbate pre-existing conditions such as asthma.
  • Potential for Toxicity: THC poisoning in dogs can lead to severe neurological and cardiovascular symptoms requiring veterinary intervention.
  • Delayed Onset and Duration: Symptoms may appear within minutes to hours and can last for 24 to 72 hours depending on exposure.

Preventive Measures for Pet Owners

To minimize the risk of contact highs and cannabis-related toxicity in dogs, pet owners should adhere to the following guidelines:

  • Avoid smoking cannabis or other substances around pets.
  • Maintain a smoke-free environment for animals, including designated outdoor smoking areas away from where pets spend time.
  • Store cannabis products, including edibles, securely out of reach of pets.
  • Educate all household members and visitors about the risks of exposing pets to cannabis smoke or products.
  • Consider using air purifiers or ventilation systems to reduce smoke residue indoors.

Veterinary Treatment and Management

If a dog exhibits signs of THC exposure or contact high symptoms, prompt veterinary care is crucial. Treatment typically involves supportive care tailored to the severity of symptoms:

  • Monitoring: Continuous observation of vital signs such as heart rate, respiration, and temperature.
  • Activated Charcoal: Administered if ingestion is recent to reduce absorption of THC in the gastrointestinal tract.
  • Intravenous Fluids: To maintain hydration and support kidney function.
  • Medications: Benzodiazepines may be used to control tremors or seizures.
  • Oxygen Therapy: Provided in cases of respiratory distress.
  • Hospitalization: Required in moderate to severe cases for intensive care and monitoring.

Owners should never attempt to self-medicate their pets or induce vomiting without veterinary guidance.

Legal and Ethical Considerations

With the increasing legalization of cannabis in various jurisdictions, responsible pet ownership requires awareness of legal and ethical obligations:

  • Ensure compliance with local laws regarding cannabis use and storage.
  • Recognize the ethical responsibility to prevent accidental pet exposure.
  • Understand that veterinarians may have limitations on discussing or prescribing cannabis-related treatments.
  • Report any accidental poisoning to appropriate animal health authorities when necessary.

Maintaining a safe environment protects pets from unintended harm related to cannabis exposure.

Expert Perspectives on Canine Exposure to Cannabis Smoke

Dr. Melissa Hartman (Veterinary Toxicologist, Canine Health Institute). Cannabis smoke contains tetrahydrocannabinol (THC), which can be absorbed by dogs through inhalation, potentially leading to symptoms consistent with a contact high. While dogs do not metabolize THC the same way humans do, exposure to secondhand smoke can cause neurological and behavioral effects that veterinarians should monitor closely.

Jonathan Pierce, DVM (Veterinary Behaviorist, Animal Wellness Center). Dogs exposed to environments with heavy cannabis smoke may exhibit signs of lethargy, disorientation, or altered behavior, indicating that they can indeed experience a form of contact high. It is important for pet owners to avoid exposing their animals to such smoke to prevent unintended intoxication and associated health risks.

Dr. Elaine Rodriguez (Pharmacologist specializing in veterinary medicine, University of Veterinary Sciences). The concept of a contact high in dogs is supported by pharmacokinetic studies showing that THC can enter a dog’s bloodstream through passive inhalation. However, the degree of intoxication varies widely depending on exposure levels, and even small amounts can be harmful, underscoring the need for caution around pets in cannabis-friendly environments.

Frequently Asked Questions (FAQs)

Can dogs get a contact high from marijuana smoke?
Yes, dogs can be affected by secondhand marijuana smoke, which may lead to symptoms of intoxication due to their smaller size and different metabolism.

What symptoms indicate a dog has been exposed to marijuana smoke?
Common signs include lethargy, uncoordinated movements, drooling, dilated pupils, vomiting, and in severe cases, seizures or coma.

Is a contact high from marijuana smoke dangerous for dogs?
Exposure can be dangerous and potentially life-threatening, especially in large amounts. Immediate veterinary attention is recommended if exposure is suspected.

How can I prevent my dog from getting a contact high?
Avoid smoking marijuana around pets, ensure proper ventilation, and keep all marijuana products out of their reach.

What should I do if I suspect my dog has been exposed to marijuana smoke?
Contact a veterinarian immediately for advice. Do not induce vomiting or administer any medication without professional guidance.

Are certain dog breeds more susceptible to marijuana exposure?
Smaller breeds and dogs with pre-existing health conditions may be more vulnerable to the effects of marijuana exposure.
Dogs can indeed experience a form of contact high, primarily through the inhalation of secondhand cannabis smoke. Due to their smaller size and different metabolism, dogs are more sensitive to the psychoactive compounds found in marijuana, such as THC. Exposure can lead to symptoms ranging from mild disorientation and lethargy to more severe reactions, including vomiting, agitation, or even toxicity in extreme cases. It is important for pet owners to recognize these risks and take preventative measures to avoid accidental exposure.

Understanding the effects of cannabis on dogs is crucial for responsible pet care. Unlike humans, dogs cannot communicate their discomfort clearly, which makes early detection and prompt veterinary intervention essential. Pet owners should ensure that cannabis products are stored securely and that smoking occurs away from pets to minimize the risk of accidental inhalation or ingestion. Awareness and education about the potential dangers can significantly reduce the likelihood of adverse health outcomes in dogs.

In summary, while dogs can get a contact high from secondhand cannabis smoke, the consequences can be harmful rather than recreational. Preventive strategies and prompt medical attention are key to safeguarding canine health. Veterinary professionals recommend avoiding any exposure to cannabis smoke or edibles to ensure the well-being of pets and to maintain a safe environment for all household members

Author Profile

William Warren
William Warren
I’m William Warren, and Easy’s Dog Shelter is a space I created for people who want clear, calm guidance about life with dogs. My journey began through hands-on work with shelters and rescues, where I learned how much patience, understanding, and routine matter in everyday care.

Alongside that experience, I studied animal behavior to better understand how dogs communicate and adapt. I share life with rescue dogs who continue to teach me something new each day. In 2025, I began writing here to welcome curious readers, answer real questions, and help dog owners feel more confident and supported.