Angry, insane, or just plain beastial; Barak is beyond healing.
Paranoid of the future; longing for the past, Niandra needs a new master.
A culture has a tradition of wearing animal pelts as a sign of status or job. Carpenters might wear beaver skins, Masons have a moleskin hood to their cloak, Gaurdsmen might have badger pelts. Done to show the culture's respect for nature and how much of nature is equal to each other.