Dumbfounded, you stand there feeling a sense of horror for those who you called as friends. The alien race uses people as if living fodder for their testing ways of making human tissue turn into strong animal flesh. They cause the person a disenchantment with any want to continue their life path as a human; excepting the transition, and welcoming their new lifestyle with, if they had them yet, opened arms.
Seeing Amy, that young slender form of a graduated woman, she ready to enter the business world soon and take her rightful place as a person with knowhow and the knowledge to make a sound future; and right then she gave that all away to be degraded physically and mentally.
Muttering to yourself about Amy becoming an animal, worse a stupid bovine beast, and wanting for to be as a male, a bull, and to life as some beast in a rodeo too!
The Doctor hearings your disgruntled muttering, asking you abruptly of what if any, do you have some person fantasy, something of an animal dream you would find enjoyable? Especially he states, since you like they who were your friends, all and more to come will be transfigured, being then of some use to their race and society.
Stunned, you look with a surprised, wide eyed stare at the Doctor, knowing already he too is an alien; but until then and right then, you thought of him as if he were a traitor human.
He smiles at you, as if understanding the conflicts coursing about in your troubled mind.
You cough, stammering your words, exclaiming of the damned way his kind dealt to Lauren her form and a life as some thing kept for sexual perverse pleasuring of alien men!
The Doctor smiles broadly at hearing your disgruntled remarks, and as your thoughts and words petering to silence and a drained silence, he says bluntly, "Dare say, would you really enjoy remaining friends with either of your friends, being maybe a cow of Amy to delight, or better, as some lusting sex minded bimbo goat woman and go with Lauren to our home planet?"
Staggering backwards a few steps, you stand in awe of what the man said, his offer comes at a time of personal remorse for two friends never to be as friends again.
He raises his eyebrows as if forcing the issue and expecting an answer right then!
If ever there were a time in your life where from making a decision to follow one path or another, this is the worst damn choice you never considered could happen.
"You are given the choice of your permanent and future internment into some animal form, you know too much now, and this makes of you a distinct liability to our cause, so chose, chose well, do it quickly, less my manager decide of some proper and befitting form he has a need and makes you become, by choice or disgust." This the Doc says, he sounding considerate of your feelings, and of what will be your future.
Looking around, you begin to ponder, wondering of all who were as human and were then as some animal, what is it you would want out of your coming new life.