Dog Chocolate Toxicity Calculator
Did your dog recently get into your chocolate stash? Instantly calculate whether the dose ingested puts your dog at risk of methylxanthine (theobromine) toxicity.
Last updated: March 3, 2026
Time is Critical
If this calculator returns a Moderate, Severe, or Critical risk, do not wait for symptoms. Contact a veterinarian immediately.
Severe Risk
High risk of severe cardiac arrhythmias, muscle tremors, and extreme agitation. Immediate veterinary care is recommended.
Emergency Disclaimer: This tool is an estimate based on average methylxanthine concentrations. It does not replace professional veterinary advice. If you suspect your dog has eaten a toxic amount, call your vet or an Animal Poison Control Center immediately.
Understanding Theobromine Levels
Veterinary professionals determine treatment based on the total milligrams of methylxanthines ingested per kilogram of the dog's body weight.
Under 20 mg/kg
Neurological symptoms are highly unlikely. However, due to the fat and sugar content, mild stomach upset, vomiting, or diarrhea could still occur.
20 - 40 mg/kg
Cardiotoxic symptoms begin to emerge. You may notice hyperactivity, extreme restlessness, panting, and an elevated heart rate.
40 - 60 mg/kg
High risk. Neurotoxic thresholds are reached. Severe cardiac arrhythmias and muscle tremors are likely to occur without medical intervention.
Over 60 mg/kg
Critical. Seizures, collapse, internal damage, and potential fatality. Immediate emergency veterinary treatment is required.
Frequently Asked Questions
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