The burning isn't painful, but is instead more along the lines of very pleasurable. You have had experiences with aphrodisiacs, and none of them can compare to this. Your pussy feels as if it is on fire, but not with flames, and instead an insatiable hunger, with the only solution you can think of being to fill it up with something quickly. This is by far the most arroused you have ever been in your life.
Your breathing is labored, and is closer to a dog's panting than a human breathing, with your tongue hanging out of your mouth as you slide out of the bed. Your too horny to even stand, and fall down onto all fours as you tear at your night gown. It feels far too hot on you right now, and your too horny to think of how to properly remove it. A few quick pulls and the night gown is hanging off of you in shreads.
The rags are bothering you, so you shake them off, starting from your shoulders, then moving downwards until your hips. When you do shake your hips, getting the last bit of rag off of you, a shaggy, golden fur covered dog tail shoots out from just above your ass crack and curls upwards. It heavily resembles that of a golden retriever, but you haven't even noticed it yet. Your far to preoccupied with finding anything small or large enough to shove into your pussy as your fingers just do not cut it.
Your heels loudly crack, forcing you up onto your toes, as your ability to be flatfooted is removed entirely. Your toes reshape into dog paws right after that, and your hands take on a hybrid appearance of human hands, and a dog's forepaws. Finally, your ears become floppy and your nose turns moist and black and tilted upwards.
You are now standing on all fours with your pair of huge breasts swinging pendulously beneath you. Their nipples are extremely erect, and you still are feeling an intense heet from within your crotch. You can also smell something inviting and quickly begin to try and find it. You still haven't noticed your changes, and just continue blindly following the scent until your nose bumps into the tower door which is connected to your room. The door easily pushes right open, which should have alerted you since it is always kept locked, but you do not pick up on that and begin climbing the stairs, chasing the scent.
At the top, you find a man standing next to the source of the smell, a male golden retriever. You see his red cock shoot out of its sheath and instinctively know that it is exactly what you need to calm down your burning pussy. The male dog also becomes restless at the sight of you and begins tugging at his leash while you meander over to right beside him. You really want to get fucked by him for some reason.
This thought finally brings you back to your senses enough to clear the fog from your head. You finally realize what you are doing and freak out, quickly covering up your breasts with one arm while your tail curls down in between your legs, finally alerting you to it's existence. The man chuckles at this. You look at him, but cannot make out his face in the darkness and due to his hood obscuring the upper part of his head. However despite this, you can still feel his gaze and know he is grinning at the sight of you.
He then speaks for the first time since you entered the tower. "I'm curious Prince, after you let this mutt have his way with you, what were you planning on doing in response to my presence? Or did you only just now realize that I was even standing here?"
You do not know who he is, but you recognize his voice. It's the same voice from before. The sun is just beginning to peak over the horizon now, alerting you that you have slept for only about 3 or so hours. Yet you are not at all tired. You try and stand up like a person, but find it impossible to do with your current form. "W-what did you do to me?" You ask, still not at all use to the feminine voice you now possess.
"Hmm, nothing too significant Princess. Just a bit of an erotic prank is all. Let me give you a brief explanation of your prank however. In simple terms, when you are horny, you will start becoming part golden retriever. Kind of like a werewolf in a sense, except instead of a bloodthirsty beast, you become a bitch in heat. That burning sensation is your heat by the way. It's why you feel driven to fill yourself with something phallic, real or otherwise. But don't worry, it is completely temporary and will undo itself if you have sex with a male dog, or can last for a full hour without touching your pussy even once. Oh, and this little transformation will only happen when you get horny. Oh, and I should warn you about this. When you are like this, you have a dog pussy. Meaning if you do end up getting mounted, you should prepare to deliver a litter of pups a few weeks afterwards as even when you turn back into your human self, your dog cunt and tail will be the only two things still remaing until you give birth."
Your tail sticks up at this, and you hate that hearing this has turned you on even more. You can't even stop yourself from panting as your thoughts focus around a possible future where you are still married off, but end up becoming his pet dog and not his wife, forced to have several litters of pups for him. You even start wondering if it would be several dogs mounting you, or just one or two?
The man then chuckles looking at your lust filled expression. "Tell you what, I already had plans for this anyways. For your first time, since how can you know what you are missing if you have never done it before, you can fuck this dog and have no consequences or pregnancy to worry about. Just a fully, risk free, fucking to get your heat sorted out."
You look back at the man with surprise, just in time to see him let go of the rope holding the male dog back. You quickly try to move, but forget your inability to stand up and fall forwards, sticking your ass high into the air in the process as you land on your tits. No sooner does this happen than the feeling of a cold nose pressing into your ass cheeks and giving your ass a sniff. The knoqledge that the dog's cock is just a few mear inches away from your pussy is both exhilarating and terrifying. So much so that you begin to freeze up and can barely move. The only thing you manage to do is lower your forearms onto the floor to stabilize your balance, and raise your tail up as high as you can, as your lust for this dog's dick quickly overpowers your ability to rationally think.
The dog wastes no more time and proceeds to mount you, sliding his cock deep into your folds on his third attempt. This is when your mind went blank, and you gave into the "bitch in heat" side of you and you genuinely fucked this dog, as a dog yourself.
By the time you regain your senses, the sun is up and you feel the dog slip out of you. Your body quickly returnes back to normal just in time for the man to walk in carrying a replacement night gown for the one you had shredded earlier. He is wearing a mask now, as the lack of darkness means he cannot use it to hide his identity. He helps you get dressed, sends you down to you room and vanishes, taking the dog with him as he disappears. He leaves a message for you in your head saying that he will "officially" be there to pick you up in 3 hours, and to look forward to spending the next month with each other as you make the long trip back to his kingdom.