My Wireless Mouse Ran Away

I went out to the grocery store and soon after I got back home I noticed my wireless mouse from my desktop computer in the office was missing. I briefly used that system and the mouse shortly before going out.

Only our dog Honey was in the house. Honey has never looked at the mouse before and she doesn't run off with or hide things. When both of us are out she typically quietly sleeps on our bed or waits by the door. She is a pouter/sulker, not a frustrated or angry dog when we go out.

From the looks of things nothing else was disturbed or missing. I had other papers and things on the desk bedsides the keyboard and mouse, including some crackers. If it was Honey I'm sure she would have taken those!

My security system's log doesn't report any other activity today other than when I set it when I left, and disarmed it when I returned. This log cannot be reset.

I've searched the entire office, behind and under the desk, the rest of the house and even looked in my camera bags and computer case just in case I had an Alzheimer's or dissociative moment.

This makes no sense!