@catsnkittens mine was super bity as well when he was kitten. It's partially in their nature but I wanted to prevent him turning into a biting adult. I read somewhere that it helps to make a whining sound, every time he bites, to indicate it hurts. If he doesn't stop, don't shout or punish, but instead immediately remove yourself from the area/situation, either by turning your back for at least a minute and ignore completely or leave the room. Very annoying in the short term, but it worked like a charm within a few weeks.