Board Thread:WARNING ALL USERS False Info\Spoilers/@comment-108.81.117.0-20140115224300/@comment-216.227.93.71-20140118191358

I think the reason they are saying if you aren't careful you may stay like that forever is because it can eventually start to control you instead of the other way around. It's why they had no idea how to get Malia to transform back into a human. After her family died she no longer needed to be a human, so she chose not to be and eventually she became a coyote that can turn into a human, not a human that can turn into a coyote.