The next three days passed quickly as you acclimated to the new bodies, the time outside was invested in walks and then gallops with more familiarity, and were a good reason to inspect the cage for a mean of escape. The female still maintained the distance, likely for the fear of being claimed in a fit of lust.
The attendants were not very pleased with the pair, every morning they verified if you mounted the mare and were always disappointed, to the extent that you would have laughed out loud at them if you could. There was something though that always sent a chill down your spine, the employees didn’t seem worried at all from the lack of action, almost as if they knew something you didn’t.
Up until now it was easy to resist the temptation, how did the others before lost themselves to lust? Something was coming, most likely the same hurdle that tempted so many stallions before you, and the thought was unsettling.
It was the morning of the fourth day that something drastically changed in the stall, the first new thing you discovered after you woke up was the arousing smell in the air, filling the entire stall with a sweet and musky fragrance that made your oversized member stiff.
The second change was the roommate herself, the mare was clearly restless as she stomped constantly from a wall to the other, flicking the tail in the same way she did when extremely nervous or flustered. You are in fact surprised when the filly turn to you with a pleading expression that morph into horror as she notices your erect member. The scared mare move slowly backward without taking her eyes of your cock until her backside is against a wall, now with a glint of desire under all the fear.
What happened to her? Up until yesterday she was uncaring and distant, while today she is…
Your eyes widens when you remembered that female horses enter heat to reproduce, and they entice stallions with their juices when ready to be mounted.
One of the workers entered the stall and gained a smug smile as he inspected the demure and aroused filly “It was about time! We expected her to enter heat two days ago, but every horse is different. Don’t worry about her, the poor thing is most likely shy, this is after all new for everyone involved. Now big boy try to resist her a bit, I bet with the boss you will give in after one day while the others gambled for only 6 hours. Whatever happens good luck stud, you will need it”