Chocolate poisoning, cocoa poisoning.Cocoa powder contains about 2.1% theobromine by weight,[4] so 14 g (0.5 oz) of raw cocoa contains approximately 0.3 g theobromine. Processed chocolate, in general, has smaller amounts.
| Chocolate toxicosis in animals may result in potentially life-threatening cardiac arrhythmias and CNS dysfunction. Chocolate poisoning occurs most commonly in dogs, although many species are susceptible.
Enter weight, chocolate type, and amount eaten. The calculator estimates the theobromine dose and risk tier, then tells you what to do next. If symptoms are present or the dose is elevated, call your vet or ASPCA Animal Poison Control.

Serious milk chocolate poisoning shows up as agitation, elevated heart rate, muscle tremors, or continuous vomiting. Your dog may develop an irregular heartbeat, have trouble walking, or show signs of stomach discomfort.
Chocolate as Poison. Chocolate has a wonderfully seductive chemistry, due in part to a toxic alkaloid called theobromine. It's not terrible for humans, but the compound can be fatal if ingested by other species.
Milk chocolate (10% to 40% cocoa content). White chocolate (the least toxic, because it does not contain cocoa mass, only cocoa butter, but it has high fat and sugar content). How Much Chocolate Is Poisonous for Dogs?