North Carolina has tried to save the red wolves and hunters and farmers routinely kill them. They will be extinct despite the conservation efforts unfortunately.
My dog used to resource guard pretty bad - we would always trade him. If he had a chew and it was time to given it up, offer him something different in exchange. Reward him when he grabs the new item you give him.
If it’s a food bowl, trade him a treat for the bowl. We used to use the “find it” game by throwing treats and he would run for those and then we could grab the item we wanted.