Utah State University Extension
This fact sheet describes the basic ecology and behavior of the porcupine and identifies ways to determine if porcupines are damaging trees on your property. We explain specific techniques for protecting trees and property from porcupine damage.
Kuhns, Michael R.; Dettenmaier, Megan; and Tegt, Jessica, "Identifying and Preventing Porcupine Damage to Trees" (2019). All Current Publications. Paper 2053.