Having quills pulled out of its face is painful for a dog. It can squirm and writhe and possibly bite you. If you are hunting with other people, one should hold the dog while the other pulls quills. As a safety precaution, you can take a leash and wrap it around the dog’s muzzle—carefully, to avoid any quills—as a makeshift muzzle. The best and safest way to restrain the dog is take it to a vet where it can be sedated.