I'm not so sure it would be good for mountain lions to be reintroduced. I may be wrong but, I have heard that if one is going to attack let's say a hiking group, they will choose the smallest person. This relates to the topic here of hiking with small children. Just imagine hiking down a trail and from behind a lion grabs a 6 year and drags him/her into the woods faster than anyone could chase it. Since I don't know of any hiker that carries a gun to fight off an attack, that would be a terrible thing to happen.