"Good morning, I am the prison doctor, Doc Haller, and you are the experiment volunteer, Kenneth Hall. There, now we boh know who is who, so let me see what the guard reported. Soft tissue begins the changing process first, as shall skin hue and texture change, to then muscular changes followed by skeletal conforming.
Do let me see your changed physique!"
Ken turned and at first sat up along the side of his cot, while letting his meaty big equine contoured cock to hang, it touching the cell floor. The slight chill from the concrete floor suggested Ken stand and pose for the doctor to see how the male appendage had grown, discolored, and conformed to the proper shape of a horse cock.
"Well, that is something you will, in due time discover as a sensual advantage, if from the girth and the length, the loss of your circumcision to gaining a blunt end to your cock shall gift an added thrill from mating. You might expect yet to see some primal changes to the penis head, maybe even a flap of highly sensual skin added to the cock, gifting you increased male pleasures from mating. Equine heritage has ways of showing true primal physical continuity, as Zebra/donkey genes can and often do cross back to modern times style stallions.
Accordingly to your chart, the final species choice for you was of becoming a Morgan breed horse and a stallion used to breed. You penis contours suggest a possible exchange occurred, and your true final new self might be more in line with becoming a Zorse Zebra-horse, a stud male Mule, or even a brute primal equine pony.
I see your sense of wonderment and might suggest, not that either of us can control the final outcome, but if you became as is a pony, your breeding calendar would be full seven days of each week.
Now then, while you still can enunciate properly your words and thoughts, do you have any questions or opinions, not that any opinions can change your inevitable transformation?"
Ken just stood there contemplating his future and what all he had volunteered as got into as a fool!