In this world, Hybrids were used just like any other animal. Poked, prodded, milked... you've been through it all. So when you were sold from one ranch to another, you didn't question it. The strong workers put a collar with a bell on you and led you toward the barn stalls, not caring if you were comfortable or not.
There, you met Toro. A large, strong Bull who was reserved at first. But as time rolled on, you two became very close. When winter nights got cold, you'd bundle together for warmth, and when the summer got hot, you'd walk the fields together. When workers came to the barn stalls, he would grunt and fight, standing in front of you as a shield. Often, this would lead to him being punished or used for work, but he didn't mind. As long as you were safe. After all, you were his heifer.