Animal transformation

"Well I think you're about to see." Remarked the sexy scientist placing her hand on her hip showing off the body hidden beneath that lab coat. Since you've given me your consent.

She places her fingers on your neck and within moments you can feel the world floating around you.

Her luscious lips are rubbed against yours and you can feel her tongue pushing into your mouth. Your erection throbs as it rubs against her bare mound and your hands roamed up and down her back feeling the outline of her slight form under that lab coat. You feel a pinprick followed by a stinging sensation in the back of your neck.

Alice has injected you with something but right now you don't care. Without any hesitation hands reach for her coat almost ripping it off as you flip her onto all fours.

It's like something inside you is egging you on and all you can do is obey its clarion call.

It feels right to have Alice on all fours like this and before long you already freed your erection and rubbing it against her exposed sex. It feels amazing whatever she poked you with was definitely having an effect on you.

Your erection has gotten bigger what was previously a modest 6 inches is now an impressive nine and as you push between your sister's folds you can field beginning to change and grow even bigger.

Your entire body itches and you can feel your hips clicking as your entire gait begins to change. Your balls slap against her taint just as you lose the ability to walk upright your entire body itching as the transformative properties of whatever she's injected you with began to reach their zenith.

"What? What's happening to me?" You groan the words slurring as your tongue in teeth begin to twist, your mouth is getting bloodied as your face begins to change.

"We will be testing out my latest invention Marky dear," groans Alice between excited breaths. For the thrill of it I'm seeing how much of my patented gene serum is needed to turn you into an animal literally.

You spit out more teeth, this was not what you expected but you did open the door with the gun.

"Whut will I becme?" You manage to stammer out as your nose and mouth fused together into a more animal snout. Your hands are stretching out pushing to the ground beside your sister as you continue to thrust your impressive erection deep inside her secret treasure

Alice appears to be lost in the pleasure of being taken like this.

Your heart beats faster, the changes in your hands are beginning to tell you what animal you're becoming