Reminds me of reading about a Romanian armored division in WWII that was put out of action because mice ate the wiring in their tanks.
That would be the German 27th Panzer division. They had dug their vehicles in and used some available hay for warmth around the vehicles. The rats got in the hay and then into the tanks and there was a smorgasbord of rubber wiring for them. When it came time to do something about the pocket at Stalingrad most of the tanks were immobilized due to wiring damage.