I’m not sure this is a life lesson or not, but something spilled in the back of my car two weeks ago (a keg of beer). It was lying on its side, but the faucet of the keg was pressed by the keg rolling around, and suddenly there’s a half gallon of beer absorbing into the floor of the trunk.
The law of unintended consequences is very real. Current events are a pretty good example of that if you ask me. Whatever imperceptible creatures occupy the 9th dimension no doubt get a chuckle at our expense from time to time!
As for the dead rodent under your center console, I'd first try disassembling the trim around the area, then move on to getting a snake cam (AKA endoscope) and try seeing if you can get a visual on it. Hopefully this is one application of technology that won't backfire!