Marijuana Toxicosis in Dogs: Increasing Risk as Cannabis Legalization Expands
Dogs are increasingly exposed to marijuana products. Learn the signs of cannabis toxicosis and what to do.
As cannabis legalization expands, marijuana toxicosis in dogs is becoming increasingly common. Dogs are much more sensitive to THC (the psychoactive compound in cannabis) than humans. Most cases come from eating edibles (brownies, gummies) or dried plant material. While rarely fatal, marijuana toxicosis is distressing and requires veterinary attention.
Key Points
- Dogs are extremely sensitive to THC
- Edibles are especially dangerous (often combined with chocolate or xylitol)
- Symptoms appear within 30 minutes to 3 hours
- Most dogs recover with supportive care
- The main danger is loss of coordination leading to injury
- Be honest with your vet — they need to know what your dog ate
How Dogs Get Exposed
The most common sources are: edibles (brownies, cookies, gummies — often also contain chocolate or xylitol, making them doubly dangerous), dried plant material, joints or roaches discarded on the street, and second-hand smoke exposure. Dogs have more cannabinoid receptors than humans, making them much more sensitive to THC's effects.
Signs of Cannabis Toxicosis
Signs appear 30 minutes to 3 hours after ingestion: severe lethargy and depression, loss of coordination (wobbly, stumbling — 'drunk' appearance), dilated pupils, dribbling urine, sensitivity to sound and touch, vomiting, tremors (in severe cases), and in very high doses, seizures or coma. The 'wobbly' appearance is the most classic sign.
Treatment
There is no antidote for THC — treatment is supportive. If caught within 30 minutes, your vet may induce vomiting. IV fluids help with hydration and toxin elimination. Keeping the dog warm, calm, and in a dark, quiet environment helps. In severe cases, anti-seizure medication and respiratory support may be needed. Most dogs recover within 24-72 hours.
Prevention
Store all cannabis products securely — dogs can and will eat edibles. Be careful when walking in areas where cannabis may be discarded. Keep dogs away from second-hand smoke. If your dog eats any cannabis product, be honest with your vet — accurate information helps them provide the best care.
When to See a Vet Immediately
- Your dog ate any cannabis product
- Severe wobbliness or loss of coordination
- Unresponsive or extremely lethargic
- Tremors or seizures
- The edible contained chocolate or xylitol
- Any suspected marijuana exposure
How RVC Can Help
RVC treats marijuana toxicosis with supportive care. We're non-judgmental — your pet's health comes first. Be honest about what they ate so we can help. Call +853 6677 6611.
This article is for educational purposes only and does not replace professional veterinary advice. If your pet is showing any symptoms, please contact Royal Veterinary Center immediately at +853 6677 6611.