As your girlfriend keeps playing with your new dog form, you are enjoying all the new experiences of being a dog. You can feel the air moving with your fur, your sight is now dichromatic, you feel stronger but due to you size every pet and rub from your girlfriend feels like a massage, and the smells oh god the smells; you can smell everything from the plants and animals outside to your girlfriend inside. As she is petting you your girlfriend explains that she has had fantasies of turning you into a dog as kind of sub and dom thing. She didn't want to humiliate you but the idea of owning and treating a partner like an animal was something that really turned her on. "I didn't actually think the pills which this bottle only contained types of dogs would turn you into one, but might make role playing one more fun and easer to talk you into". "But since the pills work portending wont be necessary see watch SIT" before you knew it you were siting "good dog" your girlfriend said petting your head "you see the pills were advertised to change more then just your body but your mind as well though your mind takes longer to change". "Soon you will be no more than a dog until this time tomorrow my dog" . You were try make sense of what was going on in your already dulling mind " I can't believe my mistress wanted me to be dog, wait not mistress she's my .... girrrrl .... mate? no she no dog". You struggle to just think strait as even the concept of boyfriend and girlfriend is escaping you: you realize your mistress? yes mistress is talking you but you cant seem to make all of it out "wa wa wa wa wa wa dog wa wa wa wa dog"
"The more you act like a dog the more you become a dog" your girlfriend was explaining to you but as she looked at you she could tell you weren't understanding much anymore "wow you must be liking this the website said that the mental changes could take as long a few hours to fully take effect but if the subject was accepting and enjoying the change it could go faster". She was happy that you were liking this since she was nerves to reveal her kink to you let alone to actually have turned you into a dog; seeing the more you were acting like a dog gave her courage to go further with exploring treating you like a dog. "Oh wait!" she yells excitedly as she jumps up and runs to the bedroom, and from the bottom of her pantie drawer she pulls out a leash and collar " I hope this fits" she says as she puts the collar around your neck "oh good" she says seeing that the collar did fit " was actually made to go around a humans neck". "Well I guess for now you are no longer my boyfriend, you are my dog and I am your owner, your mistress.
Hearing "I wa wa wa wa mistress" confirms what you thoughts and make you happy as you tail wags back and forth " yes mistress love mistress".
Seeing you tail wag just brings a smile to your now mistresses lips " you know I think you are coming along nicely but I have an idea that will ensure you are all dog".