Quote Originally Posted by catwhispers View Post
As soon as the cat starts to bite, as quickly as possible but in as smooth a movement as possible so as not to surprise or scare the cat, move your hand away from their mouth and around their body to grab the scuff of the neck (like the mother cat would to pick them up).

Then, still moving quickly but still smoothly so this is all one quick step and movement, firmly but gently push the cat's head down towards the ground (so their chin in on the ground), at the same time in a loudish, somewhat harsh tone saying something like "No" or "Bad Kitty" or whatever you say to discipline (supposedly this is supposed to be very much like what a mother cat does to discipline her kittens, which is why it is supposed to work so well, at the same time not scaring the cat). Just make sure you are firm and gentle. The position is what is important, you don't want to inflict pain or negative emotions.
I concur w/this totally. I watched my tortie cat Pigeon in action w/my rambunctious little 1/2 lb. 5 week old calico Puddy who charged her and tried to head butt her. Pigeon held Puddy's head down w/her massive paw and Puddy squirmed and squawked but Pigeon would not release her until she calmed down. Pidge wasn't Puddy's mom but she acted like one and the two of them became good buds after that.