Niki shared all my chocolate with me during his life as I'd never heard it was poisonous to dogs. Infact he ate biscuits, chocolate, cakes, they made him special burgers at the local Tootsies burger restaurant, he had pasta and sauce, curries, everything. He lived to 12 and a half. Most of it was milk but some was dark chocolate as well. Just monitor him, he'll probably be fine, as someone said, maybe an upset tummy.