I would imagine, from what I've seen of one of the Furry forums I looked at a while back, that they are very closed off, given the stigma attached to it. Hell, I didn't even know what a furry was, until a few years ago, and looked into it. Seems to me like a decent enough group of peeps, not my thing, but Live and let live I say. Never seen them harm another person, but they seem to get a negative rep.
As for real friends, I can tell ya right now, The peeps here on this board, are some of the best Real Life friends, I have ever known. Way back, when my wife had that woman cancer, I think they all helped to take care of me, and I've tried to be there for them also, when I can.
But that isn't even what real friends are all about, It is the people who you really love and care for, and feel that you get the same from them.
Hope this helps bro.
Stephen