 Playing, in fact, constitutes more than fun for a kitten, for it is essential for ranking social order, building hunting skills, and generally exercising for the adult roles.The first two to seven weeks are a particularly critical time for kittens, for it is during this period that they bond with other cats.It has been suspected that without any human contact during this time, the cat would forever mistrust humans, or would at least take many times longer than with such early exposure before the mistrust might begin to erode.