he Undying Bear is a special animal who is your prey in Shotgun Hunt: Undying Bear for the Path of the Hunter missions. While it attacks similar to other bears, this particular animal enjoys a greatly increased amount of life.
Where to find the Undying Bear: Like most bear hunts, the Undying Bear is in a cave, which lies south of Cradle Gas, where the mission is initiated. Note that Brody is dumb, but not stupid enough to fight a bear at close quarters. The bear is hiding in the left corner of the cave, near the dead bodies. Once you have provoked it, weasel out of the area and kill the bear from afar (preferably while standing on an unassailable rock).
Skin the animal to get the Undying Bear Leather, which can be used to craft the Extended Rucksack, the fourth and highest upgrade that can hold a whopping 96 items.