Puppies will eat anything, and candy should not be a problem. A big concern with dogs is when they eat chocolate. It's like poison to them, and can make them very ill or, depending on the amount, can kill them. Remember, NO CHOCOLATE! And candy only if they steal it; don't feed it to them to preserve their teeth. Most of us don't brush our doggie's teeth.
My dog eat about a lb in novmeber n its now april.. Hes fine... Healthy.. Only thing is he keeps gettin into my sour patch kids n cotton candy. I saw give it to him little so its not a problem when he gets older. That way hes imune to it!