Bull was staring face down at black sheets it recognized, its body naked to the air as a shaft forcefully prodded back and forth through its ass. It was all Bull was good for, to stand on all fours while its hole was used. The words "I am a Bull" played on repeat in its head, distracting him from any outside input, the animalistic grunts from its mouth barely heard by it.
Bull didn't know how to put it into words, but it knew it wasn't always like this. It could remember a familiar face asking something of him, to focus on repetitive phrases. Bull couldn't remember what the words were, the sounds lost to its memory, but from that moment everything was simpler, its mind ceasing to function on its own.
There were moments of clarity when it was asked to do something, able to recall the meaning of the words, only to fall back into the depths of its mind once obeyed. It could never act against the commands, incapable of the thought of disobeying, its owner making sure to wipe out any resistance in its head. Its owner would make sure the bull would continue to grow, just a mindless animal, a piece of livestock meant to serve and use. Bull just wanted to be a good Bull.