My dog ate a chocolate and he was fine..so what is the fuss all about? If you ask a dog owner what dogs cannot eat, they'll list some foods like onions, garlic, rhubarb, grapes and chocolate. Dogs' inability to safely consume chocolate is common knowledge, but thanks to their proclivity for eating anything they can get their mouths on, many dogs are nonetheless treated for ingesting chocolate every year. However, there are also many, many dogs who eat chocolate (with or without their owner's knowledge) who are perfectly fine, no treatment necessary. If chocolate is so bad for dogs, why are these candy-consuming canines fine?