Great replies, thank you everyone, and especially you, YorkieMother, that was a really great explaination.
Second question involves Training Your Puppy to Cradle and Chill,
Training Your Puppy About Biting Video - The Cradle and Chill Exercises. This shows the chill technique again, but not as punishment for anything, but as a way to get them to relax so you can clip their nails. Would this technique be bad to teach them or are you again teaching them by dominance?