If your "friends" left you because you told them you were a furry, then they were never your friends to begin with.
Now that you've shed that baggage, go find some real friends.
Now that you've shed that baggage, go find some real friends.
I am not saying this is the same situation at all, but it would not make someone "not your friend to begin with" if you were good friends for a while but then they started serial killing. Even if being a furry is no big deal at all, people do stupid things—that doesn't erase what came before.
I certainly don't think you should leave your friends over them being a furry, but friends are complicated. You can have a meaningful friendship with someone who turns out to have serious flaws. I wouldn't want to invalidate a past friendship.
Just an example, I don't have all the details or know you or anything. Edit it or write your own, or take a completely different approach. I'm not an expert at these kinds of things.