Chocolate toxicity calculator for dogs
Chocolate is the #1 food emergency for dogs — and how dangerous it is depends on three things: your dog's weight, the type of chocolate, and how much they ate. Enter them below for an instant estimate.
How vets judge chocolate poisoning
The toxic ingredient in chocolate is theobromine. Dogs break it down much more slowly than people, so it builds up in their system. Vets measure the dose in milligrams of theobromine per kilogram of body weight:
- Under 20 mg/kg — mild signs possible: vomiting, diarrhea, thirst.
- 20–40 mg/kg — restlessness and a racing heart can appear. Call your vet.
- 40–60 mg/kg — serious heart symptoms. This is an emergency.
- Over 60 mg/kg — seizures become possible. Get to a vet immediately.
🚨 Don't wait and see
This calculator gives a rough estimate only — it is not veterinary advice. If your dog ate chocolate, call your veterinarian or the ASPCA Animal Poison Control Center at (888) 426-4435 right away. Treatment works best in the first hours.
Want the full story? Read Can dogs eat chocolate? — and keep all chocolate locked away, especially around Halloween.