Dog Bromethalin Toxicity Calculator
Assess bromethalin (neurotoxic rat poison) ingestion risk in dogs based on bait type, amount eaten, and dog weight.
What Is the Dog Bromethalin Toxicity Calculator?
Assess bromethalin (neurotoxic rat poison) ingestion risk in dogs based on bait type, amount eaten, and dog weight.
Bromethalin is a neurotoxic rodenticide found in many common rat and mouse poisons. Unlike anticoagulant poisons (which affect clotting), bromethalin causes brain swelling and neurological failure. There is no antidote. Early decontamination — ideally within 4 hours of ingestion — is the only effective intervention, making this one of the most time-critical rodenticide emergencies.
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
Bromethalin uncouples oxidative phosphorylation in the central nervous system, reducing ATP production in myelin-producing cells. This causes cerebral oedema (brain swelling) which manifests as progressive neurological deterioration. In dogs, the toxic dose is approximately 3.65mg/kg of bromethalin. Rodenticide baits typically contain 0.01% bromethalin (0.1mg per gram of bait).
The calculator converts bait weight to bromethalin dose and compares to body weight to determine risk. Note that bromethalin can accumulate — relay toxicosis (eating rodents that ate the bait) is also possible.
Sources: Dorman DC. Bromethalin. In: Kirk RW ed. Current Veterinary Therapy XI 1992; Merola VM et al. Bromethalin toxicosis in dogs. J Vet Emerg Crit Care 2012; ASPCA APCC.
Veterinary Research
Every formula is derived from peer-reviewed veterinary studies and clinical guidelines, not guesswork or generic rules.
Instant Results
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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.