Is Marijuana / Thc (cannabis) safe for Dogs?
⏳ Pending source check by the Eaoae Safety Review · Drafted 2026-10-06
⚠️ AI-generated answer \u2014 not yet verified. This check was generated by AI and has not been source-checked by the Eaoae Safety Review, so it is not part of Eaoae’s verified database. Use it as a starting point only: confirm with an authoritative source such as ASPCA Animal Poison Control or Pet Poison Helpline, or ask your veterinarian. If your pet may have eaten something dangerous, contact your vet or a poison helpline now \u2014 don’t wait on a website.
No, marijuana is unsafe for dogs. THC causes glassy eyes, incoordination, dilated pupils, vomiting, urinary dribbling, and in severe cases tremors, seizures, or coma. PPH cases have risen 200% in five years with legalization.
🚨 Emergency: Yes — contact your veterinarian immediately.
💡 Why
Cannabis (Cannabis sativa) poisoning in dogs is increasingly common. THC depresses the central nervous system: the classic presentation is a dazed, wobbly dog with dilated pupils, dribbling urine, and sometimes vomiting. Higher-concentration products (edibles, oils, dabs) cause more severe poisoning, including dangerously slow heart rate, tremors, seizures, and coma. Dogs are more sensitive to THC than humans, and edibles add chocolate/xylitol risks on top.
🩺 What to do
- Store all cannabis products (flower, edibles, oils) in locked, dog-proof containers.
- If ingestion is suspected, call your vet immediately -- be honest about what was eaten.
- Monitor breathing and keep the dog in a quiet, safe space while awaiting care.
❓ Common questions
Is secondhand smoke dangerous?
Secondhand smoke exposure can cause mild signs, but ingestion of plant material or edibles is far more dangerous due to higher THC dose.
How fast do symptoms start?
Usually within 30-60 minutes for ingested products; smoked exposure acts faster.
Should I tell the vet it was marijuana?
Be honest with your vet about the exposure -- they need to know to treat correctly, and they will not report you.
📚 Sources
- Toxicosis in Dogs and Cats From Tetrahydrocannabinol (THC)
- Pet Poison Helpline: Marijuana Intoxication Rise
- Pet Poison Helpline: My Puppy Ate Weed
- ASPCApro: 17 Plants Poisonous to Pets
🔎 How the sources compare
What each authority says about Marijuana / THC (Cannabis) \u2014 compiled 2026-10-28. Eaoae’s verdict summarizes these sources; it is not our own diagnosis.
| Source | Dogs | Cats | Dose info |
|---|---|---|---|
| ASPCA Animal Poison Control | Marijuana ingestion is often not life-threatening for pets, but common signs include unsteadiness on the feet, depression, dilated eyes, dribbling urine, sensitivity to sound and touch, slow heart rate and low body temperature. With highly concentrated products or large quantities, low blood pressure, agitation, seizures or aspiration are possible, and death has occurred in rare cases. | Marijuana ingestion is often not life-threatening for pets, but common signs include unsteadiness on the feet, depression, dilated eyes, dribbling urine, sensitivity to sound and touch, slow heart rate and low body temperature. With highly concentrated products or large quantities, low blood pressure, agitation, seizures or aspiration are possible, and death has occurred in rare cases. | — |
| Pet Poison Helpline | Ingestion of psychoactive marijuana by companion animals leads to gastrointestinal distress, neurological signs (stumbling gait, dazed or aggressive mental status, sudden flinching), and uncontrolled urination; severe signs including collapse, seizure, and difficulty breathing may also occur. Inhalation of marijuana smoke can also result in poisoning, and there is no safe dose of psychoactive marijuana for companion animals. | Ingestion of psychoactive marijuana by companion animals leads to gastrointestinal distress, neurological signs (stumbling gait, dazed or aggressive mental status, sudden flinching), and uncontrolled urination; severe signs including collapse, seizure, and difficulty breathing may also occur. Inhalation of marijuana smoke can also result in poisoning, and there is no safe dose of psychoactive marijuana for companion animals. | — |
| Merck Veterinary Manual | Marijuana's primary intoxicant is delta-9-THC. Dogs develop mild signs at THC doses of 0.3-0.5 mg/kg and moderate signs above 2-3 mg/kg; the most common signs are lethargy, ataxia and vomiting. Morbidity is high but mortality is extremely low. | Merck's THC page covers dogs and cats together, with high morbidity and extremely low mortality in both species; its pharmacokinetic and dose data pertain to dogs unless otherwise indicated, and no cat-specific toxic dose is given. | Dogs: mild signs at THC 0.3-0.5 mg/kg, moderate signs above 2-3 mg/kg; probable oral lethal dose exceeds 3-9 g of delta-9-THC-dominant plant material per kg |
| VCA Hospitals | VCA lists marijuana among the human food items to avoid feeding pets, alongside alcohol, caffeine, chocolate, grapes, raisins, onions, tobacco products and xylitol, and refers readers to the ASPCA website for more information about toxic foods. | VCA lists marijuana among the human food items to avoid feeding pets, alongside alcohol, caffeine, chocolate, grapes, raisins, onions, tobacco products and xylitol, and refers readers to the ASPCA website for more information about toxic foods. | — |
| Eaoae summary (dogs) | ⛔ Unsafe \u2014 Known to be harmful or toxic. Keep it away from your pet. | ||
🔗 Related checks for dogs
- Bananas ✅ Safe
- Oatmeal ✅ Safe
- Cucumber Slices ✅ Safe
- Lily of the valley (Convallaria majalis) ⛔ Unsafe
- Sweet Potatoes ✅ Safe
- Tulips (bulbs) ⛔ Unsafe
Checked with Eaoae’s safety lookup. Answers are generated for reference and may be incomplete — always confirm with your vet for your individual pet. Spotted an error? Let us know.
