"Nephew, come toward me it is that time when you can chose if what you became is right for you." So was heard the voice of a friendly relative that stirs the mind and a brute big beastly body. As with the wagon brakes holding the rear wheels from turning, the mental and physical urge wants to overcome the dragging feeling and walk closer toward that concerned voice.
Your movement is noticed by people standing about doing business as some take hold of your head halter and pull harshly on the straps, making the bit between your teeth to pain your mouth something awful.
The insistent urges of others who do not know your situation only add urgency to your want to walk again back into another form and in a time as place where the living of your life made sense.
Screeching steel rims of wooden wheels on the wagon tend to dull the voices of men struggling to hold you there inn that time, that body, that situation. A few more steps and entry into the portal with your head you know is enough for the Portal to drag you back to where you prefer as belong. As the waves of space-time-continuum tickle the muzzle, your nostrils, and then engulf your head, the cries and screams of men trying to hold you are dragged then with you into the spiraling wind tunnel that shall return you, and likely may damn as doom the concerned men holding your reins.
"Whoo...sh," and you are returned to standing before the portal, but you came back naked as you were when a horse, your body dirty as it was from living life as an animal.
Standing there milling about you are what became of three strong men. They who were men drawn through the tunnel of time lost their human forms as you lost your equine form, you became human as they became draft horses in your era. The three newly made horses look at you and at uncle standing there, they act meek as if scared beyond their wits.
"Uncle, these who are horses where concerned citizens struggling to hold an animal form it moving when it was expected to stay waiting for its owner to return. Maybe because the wagon was not living flesh that it stayed there, as the portal took then living tissue, and transported it. Maybe too, that when returning to the proper form here, that the men gained equine forms for having followed along?" You ask, questioning with showing concern for the bold men trying to be helpful.
"Excellent is your understanding of how passing through time can work its magic on the unintended tag-along captivated by transporting of a traveler." The voice of the Portal said more to you than to your stunned Uncle.
"Portal, can you let these men return to their time and selves, being then the men, and fathers, as husbands in their time rather than being here as in the bodily forms of draft horses similar to what I was there in their times?" You ask, worried for the men as their delight was never to become as a horse and animal.
"No concerned person, as they tried to hold you there, they became engulfed when you were and what you were for them there in that times they must remain as being here in your time. If they walked through me and passed into what was then in their era, they would arrive being as they became, horses, but at a younger age. They might lose all they ever learned or knew of what they were when human, and begin life anew being dumb animals driven by instincts. Nay but they are bettered to remain here being as horses and retain the covenant promise of living life equal to three score and ten years, they being as healthy horses doing what you their master may wish for them to do!" The Portal said as it explained the doomed men standing their with horse heads hung low and feelings of stallion lust building in their changed loins.
"Come along nephew, and you three, you come with me too, I shall gift to you a grand lifestyle of what any a stallion horse would feel as heaven born." Uncle said and the three newly horses took to follow along with Uncle and you.