I have had cars that were old and the rats and squirrels would climb under the hood and chew the wires.
My neighbor had her headlights cut because of the rodents affinity for electrical wiring.
Seems they like the feel of the insulation on their teeth................
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I think their teeth continually grow, so they have to chew on something to grind them down. Rats have always chewed on car wiring.
Yep, they are really bad here, rats, squirrels, mice, wood rats, etc................