My Dog Ate Marijuana or an Edible — What to Do (Vet Emergency Guide)

With marijuana legalization expanding across the US, veterinary emergency rooms are seeing a massive increase in cannabis poisoning cases in dogs. Edibles are the biggest culprit — dogs eat brownies, gummies, cookies, and butter without knowing the danger inside.

Veterinarians specifically flagged marijuana in edibles (like brownies) as a growing problem during our consultations. Here's what you need to know.

Why Marijuana Is Dangerous for Dogs

Dogs have more cannabinoid receptors in their brains than humans do, making them far more sensitive to THC. What gives a human a mild high can cause serious neurological symptoms in a dog.

The Double Danger of Edibles

Edibles are especially dangerous because they often combine THC with other ingredients that are toxic to dogs:

• Chocolate brownies — THC + theobromine (double toxicity)
• Gummies with xylitol — THC + xylitol (potentially fatal sugar-free sweetener)
• Cookies with raisins or macadamia nuts — THC + additional toxins
• THC butter/oil — Extremely concentrated, high fat content can trigger pancreatitis

Symptoms and Timeline

When Symptoms Appear

• Smoked/inhaled exposure: 5-15 minutes
• Eaten (flower/bud): 30-60 minutes
• Edibles: 1-3 hours (delayed because THC must be digested first)

What to Watch For

What to Do Right Now

1. Stay calm — Most dogs survive marijuana toxicity with proper care
2. Determine what and how much — Was it a brownie, gummy, raw flower? How much? What other ingredients were in it?
3. Call your vet or emergency clinic immediately — Don't wait for symptoms
4. Be honest about what your dog ate — Vets don't report this and need accurate info to treat your dog
5. Do NOT induce vomiting at home unless your vet specifically tells you to — the neurological effects increase aspiration risk
6. Keep your dog in a quiet, warm, safe space — Minimize stimulation (noise, light)

What the Vet Will Do

Treatment for marijuana toxicity is mainly supportive (there's no specific antidote):

• Decontamination — Induced vomiting (if recent and safe to do so) or activated charcoal
• IV fluids — To support blood pressure and kidney function
• Temperature regulation — Dogs often become hypothermic
• Monitoring — Heart rate, breathing, neurological status
• Anti-nausea medication — To manage vomiting
• Lipid emulsion therapy — In severe cases, IV fat emulsion can help absorb THC faster

Recovery time: Most dogs recover within 12-24 hours. Edible cases can take 24-72 hours due to slower metabolism. Virtually all dogs make a full recovery with appropriate veterinary care.

Prevention

• Store all marijuana products in locked, pet-proof containers
• Treat edibles like medication — never leave them on counters or tables
• Be aware during parties/gatherings where edibles may be accessible
• On walks, watch for discarded joints, roaches, or edible packaging
• If you use marijuana, designate a pet-proof storage location

A Note on CBD for Dogs

CBD (cannabidiol) is different from THC and is being studied for veterinary uses including anxiety, pain, and seizures. However:

• The CBD pet product market is largely unregulated
• Many products contain more THC than labeled
• Quality and dosing vary dramatically between brands
• If you want to try CBD, use veterinary-specific products and consult your vet

Use ToxiPets to check any product for pet safety. If your dog ate something you're unsure about, scan it in the app for an instant answer.