I was recently informed by a taxidermist I work for that upon rehdration, a bear hide I had tanned for him started losing hair. After I had caged and combed it out in my shop, there didn't seem to be any hair loss. Can anyone give me some advice as to what may have happened on rehydration? I use Knobloch's tanning products and a standard method of tanning. The taxidermist uses luke warm water for about a half an hour for rehydration. Any explanation would be helpful.