Top 10 Alleged Real-Life Werewolves and Wolf-Men.
Just today I listened to a very interesting podcast on the topic of #3 from this list, the Beast of Gévaudan.
This podcast is one I just recently started listening to, and have been going through their entire archive. It's called Monstertalk, and is from a group of skeptics who talk about the scientific basis behind monsters. Mostly it's a debunker podcast. Anyway, the specific podcast about the Beast is here. You can find their archives at that page by checking the left sidebar.
The conclusion: it was wolves. Multiple wolves. A couple of years ago, the History Channel had a show about the Beast, and the people involved in that show concluded it was a hyena escaped from someone's private bestiary. However, it seems that the real reason people are loathe to say it was wolves is because it's currently politically incorrect to say that wolves are vicious wild animals who eat meat that is easy to kill and plentiful. When people are more plentiful and/or easier to kill than other prey, they are going to eat people.
If you're a hardcore Bigfoot believer, or chupacabra believer, or whatever, you won't like it. But if you are honestly open-minded about and interested in these things and can overlook the hosts' occasional arrogance, you should check it out.