Beethoven's mom was eating chocolate and even though this brownish kind of food is never given to him, he decided to try very hard to earn it this time. He begged, prayed, whined, made poses, and used his paw to try to sensitize mom just to end up seeing her eating the entire piece! Did he get angry? No, keeps loving mom... and vice-versa.
Remember: never give chocolate to your dog. Chocolate has theobromine (a chemical similar to caffeine) which is toxic to a dog when it ingests between 100 and 150 milligrams per kilogram of body weight.