-.-I'm unsure, maybe furs are a gift from whatever greater being is true if there even is one (don't like putting much about faith here, but I do believe something). Or more darwinistic, maybe we're more in touch with our animal side. Our instincts are biting half the time and we have much simpler and better emotions. We love our friends and hate our enemies, were as the average person doesn't understand emotions very well. So you've probably been just trying to think your insane (well, I like to think I am still, but thats me) as an explenation and suppressing yourself so letting yourself go is something you've gotta get used to. I didn't feel to much different, but I already did a lot of furry things and didn't care much. I thought that I was probably one of the only ones that did crap like that and *tada* I found a community of people like me. Of course a lot of people try to keep themselves feeling normal and now that you have a better explanation of it its just not the same, but trust me, its better. So since your asking for psychiatry here, its the part of the brain that keeps you timid, now that your letting yourself go that part of the mind "tingles" (just means it feels weird). No you know that that feeling is more normal and you're adjusting to letting your furrified self out. This happens with a lot of things, whenever you try to change yourself in any way you usually feel this way. Like trying to make yourself do riskier things, your nature from before says no but you're saying yeah. So after a while this will be your nature.