The new creator... decided who they were basically didn't matter anymore, and that whatever they wanted out of this new humanity their desires may change over time. So they decided to make humanity a bit more... modular in a sense. "Humanity starts off practically the same, but their genetics are highly compatible with all other forms of life. When born from a non-human the new hybrid can have variable amounts of humanity. From practically fully human to merely having the "humanity gene" which allows for the hybridization. Every human or hybrid will share the "humanity gene" granting them the ability to have children with anything else with DNA. Human females have hormones which makes male animals less likely to hunt them and more likely to mate if given the chance. Meanwhile Human males have hormones which makes female animals more submissive. The male hormones are less effective on humans with the "humanity gene"" The new creator was happy they were a guy... even if somehow humanity got diluted to the point where everything was animals he could still fuck a population human... perhaps he could start a religion by invisibly impregnating certain populations.
...This was fine the creator thought. If he wanted to reshape the world a certain way he could do it by influencing so many different events. He could influence culture, he could fuck humanity back into existence, he could possess people and have them fuck as many animals as they wanted... It was merely a shame that he didn't have the "humanity gene" as he thought of it... Then he could seed the world with several different tribes already. The creator threw the typewriter down on the ground and out popped 250 humans. 125 men and women all of assorted ages and races. They'd bumble around for a bit and their creator was curious how much they knew about... The creator just slid into one of his creations and figured out they knew very little... Basic survival stuff... they'd create shelter and probably get enough to eat in the short run, but they didn't know the whole fucking part yet... Well they knew if they fucked each other they'd make more of themselves, but they didn't know about the whole animal part yet... actually maybe not even just animals... if they could figure out how to fuck or get fucked by plants... The creator was curious how this world would develop.