As you look in the mirror, you see the impossible happen. You were just too busy having great sex to realize that your body was changing. Your legs have gotten shorter except for your feet that seemed to be longer than what they usually are. Coarse black hair can be seen growing all over your body and you recognize it as being fur. Your forehead is smaller while the lower part of your face is more pronounce. Fear now joins the excitement that you feel while pumping this fine looking lady and watch in awe your transformation. A small knob has formed at the base of your spine and your round ass has gotten flatter. You notice that with each pump that you give in to her, the change progresses more. Deep in your mind you clicked that it was the sex that change you more and more into a beast but the joy that you were receiving buried any rational thoughts. With all the strength that you can muster up under these circumstances, you give one hard push and try to get off. You give yourself a pitiful look in the mirror as you fail to get off her. You are physically stuck together and the only thing the push gave was an even bigger sensation of pure joy. Your penis had grown so big inside her that there was no way to get off her…not that you want to anymore.
You keep on pumping even harder this time, all rational thoughts gone with that mighty push. You watched as your hands turn into paws and your new pointed nails adapts themselves to those stubby fingers of yours. Hearing her cry out loud only excites you even more than you thought possible while you spine re-adjusts itself and your new posture makes this session of sex even more comfortable. You watch your tail grow longer with each push and your body seems to have shrunken a little bit. Your lips and nose have blackened, your ears grew so long that they fell over themselves and your whole face is now all stretched out. You feel really hot inside and some new found instincts tells you to open your almost formed muzzle. As soon as you open your muzzle you feel some immediate relief. Your long tongue comes out and you start patting rapidly. Just as your legs finish their change that forces you to stand tip toes while hanging on her back, you explode into her and deliver your white load.
As your rational thoughts come back, you look in the mirror at the rottweiler mounting the pretty lady and whine. You try once again to get off her but fail, as you are still too big to unhook yourself without causing any damage. While waiting on her back for your penis to deflate, you are able to take notice of your new senses. The odor in the room is pleasant and you can now hear what is happening in other rooms. A mix of human sounds and animal sounds can be easily heard now. That’s when it dawns on you that this was all a trap but at least your not the only one being turn into a beast. You wonder what will happen to you next and try to ask her, but all that comes out is growling. In the meantime, small waves of pleasure could still be felt going back and forth.
You have no idea how much time passes when the door opens up and somebody walks in the room.