Fear would be normal but you are not scared. The odd form to which you were not born has quickly taken your fancy and with instincts knawing away at reasoning powers you find the beastial life appealing.
One great mare led you to explore this new very sexual based body. A second romp with the mare makes you think only for the male pleasure you feel swinging down low.
As each mare in turn offers you a new chance to fall deeper under the spell of animal style sex, you accept this life with open will.
Time means nothing to you now! There is nothing to rush and get done here. Your pleasure and the lusting desires of your mares is the only thing on your simple mind. A moment or two as you consider for just a second that living this way would be fine for the total contract length of twenty years,or more.
Surprised are you at how easy these young mares offer their bodies to your pleasure. They are easy, in the word for it but then also so are you easy and very willing to give of yourself.
After much exercise the five of you rest and feed from the food trough in one corner of the stall. A cool slurping drink washes down the ground up mealy mash which was you staple now as a pony.
Almost a full day has passed and the life of Shetland Pony Stallion seems just as perfect as you had long since hoped it might.