At about 3:00 AM it began to rain. Despite my lack of energy, this did trigger a mild mental shift. So I slid out of bed, walked over to the open window, and sat down on the floor in front of it. It was cracked open just wide enough to let in the sound of rain, yet not enough for the rain itself to get through. As I looked out at my misty front yard, past my own face in the glass, I felt an unusual urge to sneak outside and run on all fours in the wet grass. I had never walked that way outside before though. I'm not too fond of dirt, not to mention we own several dogs and I would prefer to avoid stepping in anything... unfortunate. I ultimately decided against it.
As I snapped out of my thoughts, I noticed something beginning to take form in the reflection in the window. In the darkness of the room, shadowy and indistinct, the glass began to reflect something a bit more akin to myself. My true self. While the logical part of me said that it was surely just something in the room behind me or perhaps a part of my curtains, the more fanciful part of me could only focus on what was right in front of me. There were my ears. Clear as day, I could see my cat ears resting on top of my head, attentive to the sounds of falling rain and rustling crickets outside.
I walked back to bed on all fours.
I have yet to pinpoint just why rain makes me so prone to shifts. I can just so clearly imagine myself lying on my human's couch in the living room, gazing out of the window and watching the rain. I don't believe in past lives so I would not call this a memory... a vision, perhaps? If other universes exist, possibly a glimpse into one in which I am fully feline, and such an event is a regular occurrence? Such mysteries may never be solved.