The first thing my mistress did when she adopted me was take me to the doctor to get my brain "augmented". It was the normal accepted procedure for pets. Her wishes however weren't.
Most owners simply locked their pets permanently on a low level of cognition leaving them happy, drooling and oblivious.
She wanted my intelligence to be malleable. I'd stay my usual sharp shelf except when in the presence of her scent.
While she was at work I'd resist my new role as her pet and think of all the arguments for why she should let me go back to my old life and how I was really a strong capable independent person. Then she'd get back and even just her presence in the room would make my brain slow down and stutter. But that was nothing compared to when she'd take off her shoes and push her feet in my face. Or when she'd take my face and shove it in her armpits.
When faced with aroma of her girl musk I was reduced to all she ever said I was. A dumb drooling dog. I could no longer even understand what she was saying to me. She'd speak for what felt like hours but it was like a comforting stream. I could only pick up on a few words like "dumb" and "bitch".
On some days she'd strap her used underwear across my face leaving me brainless for the whole day. I hated to admit it to myself but I actually enjoyed those days more than the ones I spent lucid. Everything was novel, fun and pleasurable. Time went by fast and I never got bored. On those days I'd just play with all the toys she gave me and try to pleasure myself.
I didn't admit it to myself but it became a disappointment whenever I was left with my mind intact. I even started sniffing different things around the house to get a small high off of mistress' aroma. The increasing spouts of mindlessness were also taking a toll on me in other ways. It was subtle at first but I could start to see my mind slowing down. The effects of mistresses musk lingering a bit longer with each huff. And after each huff my mind recovering just that little bit less.
Even if I could see it I couldn't stop it. I was addicted to that divine aroma. One day after leaving for work mistress left her used panties laying on her bed. Seeing the opportunity I immediately snatched them and started sniffing her heavenly smell.
I promised myself it'd be quick. Just long enough to cum. But after my first orgasm I just continued. Each orgasm leaving me more mindless and blank. Until I wasn't even sure if I was touching myself or just coming due to her heavenly scent.
I don't know how long she was watching me, but by the time she revealed herself I didn't even try to hide. She looked pleased and whispered some human words that were by now far beyond my reach.
After that day I stopped having negative thoughts about being Mistress' pet. In fact after that day I stopped having a lot of thoughts, but that didn't really bother me.
