Yes, it was ground squirrels that chewed the 5K wire loom on my 4R. They like wires made with peanut oil too.We have a lot of Squirrels up at our Cabin. We feed them peanuts in the salt less shells. 14 years up there during the Summer, and never have they damaged anything on our vehicles. But they do chew off small branches from the Pine Trees, which makes a mess. Ours are tree squirrels, ground Squirrels can be very destructive.