You head for the first door with the symbol for male. When you enter, you find that somehow you are in a wide savannah, which of course should be impossible. Realizing the mansion must be magic, you get nervous and turn around, but the door has vanished. Nothing to do now but press onward now.
Before you is a great rock formation, and suddenly at the top of it appears a male lion! He lets out a great roar, and you freeze, hoping he hasn't seen you, but he has and soon he is bounding towards you. You want to run, but you stand your ground, knowing that you could never outrun him and to intimidate him is your only chance. When he gets close you puff yourself up as big as you can and let out your own best attempt at a roar. He slows, but seems only amused at this, if a lion could seem amused. He trots in a circle around you, looking you up and down with hunger. You keep up your game but it's no use, as soon he pounces and forces you to the ground. You figure this is the end, but the lion is strangely gentle as he pulls and tears off your pants, and then starts licking at your cock!
You don't know if this is all some strange magic of the mansion, but you know it feels amazing. You relax and let the lion do his work. You rapidly achieve the biggest erection of your life...and it keeps growing! You notice the rest of you is growing too, and you're growing fur. Are you turning into a lion? Then suddenly you hear a voice in your head: *Not a lion, but an intelligent anthropomorphized lion/human crossbreed, to live in my menagerie. The price you pay for intruding in the mansion of a wizard.*
But it didn't feel like paying a price, as power and pleasure and wild energy rushed through you. You felt better than you ever had, and figured this wouldn't be too bad.
But then the lion looks at you with a look that seemed both pleased and yet malicious, and you notice his growing erection, far bigger than yours. With one great sweep of his paw the lion flips you over. You try to rise up but as soon as you are on all fours you feel his crushing weight atop of you. You've grown stronger already, but are still barely strong enough to hold him up. You struggle to escape, but he lets out a growl and bites your neck with his teeth. He may not be able to talk, but his message is clear all the same: submit or die. In terror, you freeze, and his bite slackens, but he does not remove his jaw.
Then you feel something prodding at your backside...his erection! No! You were going to be raped by the lion! But at the hint of resistance from you he growls and bites down again, reasserting his dominance, and in fear you go still again. You feel the tip of his erection again, poking around to find your anus, no doubt, but then to your shock he thrusts just behind your balls instead, and you feel him actually start to push into your body there. Pleasure explodes forth from the area and up into your brain, but you notice you've stopped growing larger. Furthermore, the mane you'd begun to grow begins to recede, and...breasts! you had breast buds! He was making you female!