Even just a small amount of chocolate may be dangerous to your dog. This depends on the weight and breed, and what kind of chocolate your dog consumed. Different types of chocolate have different levels of danger to your dog. Chocolate poisoning may lead to hyperactivity, muscle spasms, seizures and even cardiac arrest.
I'm not convinced it is. I've seen dogs lap up chocolate that was dropped. And they didn't drop. lol
Because some people are stupid.