We used to have an "airport car" parked at airports where we would frequently fly the King Air. The rabbits would occasionally munch on the wiring. They were especially bad at Rocky Mountain Regional (near Denver), where we ended up replacing a wiring harness TWICE that I can remember. And for my old junk cars, I ended up putting moth balls in the cabs to keep the mice out. Probably not a practical solution.

In the mountains, the marmots are notorious for chewing wiring on cabins and such. Maybe a woodchuck? Only thing I know for sure to keep them knocked back is kids with .22's.