Dog THC Toxicity Calculator
Assess the risk when your dog is exposed to cannabis, marijuana edibles, or THC products.
What Is the Dog THC Toxicity Calculator?
Assess the risk when your dog is exposed to cannabis, marijuana edibles, or THC products.
THC toxicity in dogs has risen sharply with cannabis legalisation. Dogs are far more sensitive to THC than humans. Edibles are especially dangerous — often combined with chocolate or xylitol. Enter the details below for a risk assessment.
Every result is based on published veterinary research and breed-size-specific growth data — not generic averages. This tool is completely free, works instantly in your browser, and requires no account or sign-up.
How to Use This Calculator
Fill in the required fields above — typically your dog's weight, age, or breed size. Every field has a clear label and hint.
Press the calculate button to get your instant result. No page reload, no account needed, no waiting.
Your result appears immediately below the calculator. It includes the primary answer plus additional context where relevant.
Share, print, or save your result. Always discuss health-related results with your veterinarian before making decisions.
How It Works
Dogs have a higher density of CB1 cannabinoid receptors in the brain compared to humans, making them significantly more sensitive to THC. Onset of signs is typically 30–90 minutes after oral ingestion (faster via inhalation). Duration can be 6–24 hours depending on dose and individual metabolism.
The calculator estimates THC dose in mg/kg based on product type and estimated THC content. Risk thresholds are based on ASPCA Animal Poison Control data and published veterinary toxicology: mild signs below 1mg/kg, moderate toxicity at 1–3mg/kg, severe effects above 3mg/kg. The lethal dose in dogs is reported at approximately 3g/kg of pure THC — making fatality rare but not impossible from high-concentration products.
Veterinary Research
Every formula is derived from peer-reviewed veterinary studies and clinical guidelines, not guesswork or generic rules.
Instant Results
No page reload, no waiting, no account needed. Enter your details and your result appears immediately.
100% Private
All calculations happen in your browser. Nothing you enter is ever stored on our servers or shared with anyone.
Always Free
Every calculator on Doggy Calculators is and will always be completely free to use — no premium tier, no catch.
Frequently Asked Questions
Sources & References
This calculator's formulas are based on the following peer-reviewed and authoritative veterinary sources:
- ASPCA Animal Poison Control Center — Primary toxicology reference for toxic substances and risk thresholds
- Merck Veterinary Manual u2014 Toxicology — Detailed toxicology data, LD50 values, and treatment protocols
- Pet Poison Helpline — Clinical toxicology reference and emergency guidance
- Plumb's Veterinary Drug Handbook — Antidote dosing and treatment protocols for toxic ingestion
⚠️ These calculators are reference tools only. Always consult a licensed veterinarian before administering medication or making medical decisions.