Forget everything you know or have been told about puppy biting and read this very carefully. Most of what you have read and learned so far is nonsense. Forget all of it, it’s only getting in your way.
Here is the deal. Dogs bite. Dogs run, dogs jump, dogs bite. Biting is the most natural and instinctive act a puppy can make. When teaching a puppy not to bite your hand, you aren’t teaching the puppy NOT TO BITE, you are teaching the puppy TO BITE. As in WHAT to bite. So you hold an object in your hand, preferably a rawhide stick. You leave half of the rawhide stick available for the puppy to chomp on as the puppy chomps, you move your hands around, exposing more or less of the rawhide stick to the puppy’s chomping jaws.

teaching dogs and puppies to bite
You praise and encourage the puppy enthusiastically as she bites the rawhide. If the puppy should bite your finger, you simply make a growling sound or an “eh eh” in a deep voice and you can say the word “nice.” Pick your own word, but I use the word “NICE!” as a catch all when a puppy is overdoing any behavior, playing too rough with another dog, biting a finger or jumping up on someone.
But the key here is to ENCOURAGE the puppy to bite on the OBJECT. Praise and hold it in your hand while the puppy chews on the end of the rawhide stick. This also teaches trust as well as bite inhibition. Do this over and over again until you have absolutely no fear of the puppy biting your hand.
Toys can serve the same purpose as rawhide in teaching puppies TO BITE!. You should spend hours of time holding things in your hand while the puppy bites on the other end. This is how puppies learn. They are smart enough to figure it out and they know instinctively they are not supposed to bite your hand.

puppy biting
Puppies are very very smart. Try not to use discipline and fear to teach puppies not to bite your hand. You never want to inhibit learning because it will make the puppy shut down and be AFRAID to learn new things. Always try to teach a puppy what TO DO and forget about teaching a puppy what NOT TO DO.
They will grow and learn by leaps and bounds.

jackie brown biting a rawhide stick