Remus/Caroline
It was a whole thing with an anti-magic spell and him dying and the other side collapsing, so not actually a cure. Anyway, it's not like a disease or anything. Werewolves where I come from are born with a gene and it just has to be triggered, but there's not usually a way to reverse it. Tyler just got lucky. He's technically an untriggered werewolf now, but that's practically human.
There may have been mountain lions, but there were wounds in suspicious placed for three people being attacked by one. I'm not even a doctor and I know that, so people are going to get suspicious if it keeps happening.