Several years ago a groundhog ate my crankshaft sensor wire right off at the sensor. For some reason they also must like undercoating too because they clawed a lot of it off of the frame of my Chevy suburban. My cousin changed out my sensor and 6 months later he had a mustache in his shop and called me over. Same claw marks and wires eaten. The guy didn’t know what did it so my cousin asked if he ever saw groundhogs around it. His answer was yes. I live in the country and I think I’ve shot 13-15 of them in my yard since this happened.