If you have an aggressive chewer, you may want to upgrade to the 9-gauge chain link.
Some dogs are “pullers” who like the ‘give’ sensation of chain link. For those dogs, super aggressive chewers or climbers consider upgrading to hot dipped 6-gauge galvanized welded wire. There is no ‘give’ with this type of wire making it more difficult for teeth to grab onto. Plus, the heavier gauge makes it virtually impossible to chew through. Additionally, dogs with a tendency to climb are deterred by the 2” x 4” welded wire as the smaller openings do not offer a good foothold like chain link will.