I popped the trunk to check the fluid levels in my 2004 Subaru Impreza WRX. I noticed some leaves and pine needles in a little depression. I thought it might have entered through the hood scoop, although it was a little too coincidental. I didn't think too much of it until I noticed bite marks on some cable insulation. The wire was actually severed. My car is functioning alright, although there might be some obscure function that is now disabled. It might just be a grounding wire. I guess mice love chewing through wires.
It's been raining a lot here in Northern California, so I think maybe a mouse sought shelter from the elements. Or it could have come from a trip to the Sierras, although I didn't notice anything when I got back (could have overlooked it).
Any suggestions for avoiding this in the future?