4 ms·I don't know if I'd say 9 months gets you a fully functioning human being.by cperciva 6y agoI don't know if I'd say 9 months gets you a fully functioning human being.samatman 6y agoThey can scream, eat, and poop, what else can you really ask for.cperciva 6y agoBiologically speaking, I'd say that an animal is fully functional when it can defend itself from attack, obtain food, and reproduce.