Puppy play biting & snapping, Help!?

ALL dog trainers and vets will HIGHLY discourage any of caesar milan's work. Most of the dogs he touches turn into worse than before and a lot more aggressive. The "staring in the eye to ert dominance" actually is a challenge telling them that they are your competitor to be "alpha." Try strong "No!" and if that doesn't work, try shoving the bitten appendage into their mouth. As a last resort a firm smack on the snout will work, especially with the jumping. And the yelping does not work, but makes him think of you as submissive to him. Try the "No" and if needed (last resort) smack. It will stop.