 Nursing animals like Mikey back to physical health is one thing. Ministering to their emotional wounds is often a bigger challenge. Having been raised in captivity, many of the animals arrive with what amounts to severe PTSD. And they must be taught to trust the humans caring for them. They're already mad at people anyway because of whatever people had done. I had one tiger years ago that anytime you came near, he'd want to hit the fence and kill you.