We're lying in bed, both naked and turned on, you appraising me… "It'll only last for a week or so, I think," you say as you flip me on my front. "What?" I look back to see your hand on my ass, rubbing in circles. You take the other hand and place it on the small of my back, doing the same. "What are you… oh" I say, as I see short black fur spreading across my skin from where you're touching me. I arch my back, feeling it spread further up towards my neck and circling around to my stomach. "I just need you like this for a day or so, but I'm hoping it will wear off within a week… I'll miss your tits." you say as one of your hands moves towards my spine, caressing it downwards until I feel it stretching and pulling away from me. You pinch the new skin and pull, guiding a thin, powerful tail that I can feel your hands through. I bend to the side to feel it myself, noting my new flexibility. I'm pretty sure I couldn't bend that way before…
 
You stop changing me and let me take in the details. My legs down to my knees and my body to just under my tits is covered with the soft black fur. I can feel my tail thrashing around; I'm trying to wriggle it from your grip. I flip to my back again and feel my neck; it's spread there too. You grin at me and kiss me there. The feeling through my fur is wonderful. You grab my arms and pin me to the bed, lifting your leg to sit on top of me. I can feel the fur spreading from where you're holding me, my forearms less cold than they were a minute ago. I turn my head to see it reaching my wrists and, slowly, my hands. I gasp as I see my palms getting longer and growing pads. It envelops my fingers as my nails shrink and fold into themselves, forming sharp claws. I try to grasp your wrist with my paw to no avail; I can no longer grasp anything. My thumbs are too far up my wrists for that now. My arms are completely furred up to my shoulders now, and you let them go. "How far are you taking this?" I glance at you suspiciously, nervous about it. "All the way, this time," you say as you slowly run your hand from between my tits all the way up my neck and to my chin. I try to speak again, but I can no longer get the words out. You must have changed my vocal chords… you really are taking me all the way. I shudder in anticipation. 
 
You caress the sides of my face with your fingertips, drawing forth fur that circles my still-human face. Your hands run across my eyes, slitting them and making me see everything much brighter… I have to blink a few times to get used to the painful light. You tug on my ears, pointing them and furring them while moving them to their proper places higher on my head. I push my head forward to kiss you, but you rest one finger on my mouth and nose to stop me. I feel my nose fusing with my upper lip, my entire lower face ever so slowly protruding outwards. I open my mouth and gasp, but you use this as an opportunity to run your finger over my tongue and quickly change my teeth. My tongue feels dry and rough now, and as I run it over my teeth I notice you gave me very large, sharp canines. I can't fully close my mouth over them so you pull my face outward a little more, forming a very short muzzle. Now I know you're just teasing me. I go in to kiss you again, and this time you oblige, kissing me on the nose. I try to kiss you back and realize that I don't quite have a way to do that anymore without a human mouth. I push my nose into your hand and lick it, shuddering at the feel of your skin on my sensitive face. You take my muzzle in both hands, pulling it forth and stroking the sides to add whiskers. I can feel the fur sprouting from every inch and close my eyes until you finally let go.
 
You shuffle down towards the end of the bed, flip me over, and slap my ass. I'm surprised that it was a little painful, and my face tightens into a snarl. I can feel a growl resonating in my chest. Your eyes go wide and you tap my nose to scold me. "Now now, I can't have you being wild on me. That reminds me, I have to grab something…" you say as you get to your feet and walk towards the closet. I take into account my body and face, pawing at my muzzle to get an idea of its size. It's quite large and I am quite the beast. I didn't realize you were making me bigger, but now I definitely see it. I took up maybe a quarter of the bed before, but now I'm nearly the width of your mattress. I look up to see you coming at me with a strip of studded black leather in your hand, a buckle attached to one end. I make a grumbling noise in my throat in complaint and you simply get to one knee beside me, putting my head on your other knee. From here we are face to face. I -am- massive. Now I wonder what you're going to use me for… as I'm lost in thought, I hear you clicking the buckle into place. You've collared me! I shake my head to loosen it, but it jingles. I look in the mirror across from me. You collared me AND tagged me? I can see my name on one of them, "JACK". I give you a dirty look, or at least my best estimation of one. I'm not quite sure how emotions play out on my new face. You seem to get what I'm saying. "I don't want you running off on me now, and if someone finds you my address is on there. They won't think you're wild."
 
You look to my still partly human legs. "How could I forget?" you say, as your hands glide down my body from the waist. I can feel the bones changing from inside, not painful but definitely a weird experience. "That was to ensure you walk on all fours, pet." I shudder. "That's what you are for now, kitty." You grab one of my feet in both hands and I feel it changing quickly under your influence. You really don't want to waste time now. You grab the other one, cover it in fur, and change it as well. I tense it, feeling the claws extend, and hearing you curse under your breath. "Don't do that when I'm close," you say as you show me your hand. I cut your palm, a neat gash from the pad of your thumb to your middle finger. I didn't mean to do that. You seem to understand that I didn't, though, and reach down to hug my head. My head is the size of your chest…
 
You stand up, and pull on me to get up as well. I extend my arms in front of myself, and slowly unfold my legs from the mess of blankets on the bed. I must be 8 feet long; I'm absolutely massive. My head reaches to your chest. "That's a good kitty…" you say, stroking my head behind my ears. I purr and push my head into your hands. "Now stay still, I have to try this out," you say, and you put both your hands on my shoulders. You throw one of your legs over my back, and then push your weight onto me. You are going to ride me? I knelt under the weight, but you tell me to get back up. I push on the ground again and rise, your weight becoming less and less noticeable as I feel you changing something about me from up there. You slide off of me from the side and walk to the closet again, this time producing a very thick leather leash. "This will do very well," you say as you attach it to my collar.