One option intrigued Daniel because it didn't have much description. "What's 'breeder'?" he asked.
"Oh, that's kind of exactly what it says on the tin," Dr Laura laughed. "If you choose 'breeder', for the designated period of time you undergo a predominantly mental transformation. You're deprived of your human intelligence, and become focused on natural instincts like eating, sleeping and obviously mating. We put you up in an enclosure until you leave, too, so you're looked after and stay safe."
"So it's kinda like petplay but more literal?"
"I guess, yeah," she replied. "You can change your gender and species when you change if you want, and we've modified DNA strains to make childbirth painless." Daniel had to admit, this was sounding pretty cool. He filled out the form for it once Dr Laura gave him one, and proceeded towards the transformation chamber.
Once he got inside, Dr Laura called to him on the tannoy. "Oh, don't forget to remove your clothes before you go," she said. "You won't be needing them for a while," she added teasingly. He blushed, but undressed willingly and stepped into the cubicle where the changes were applied naked.