(If I know their account I'll probably ask about what he posted. If I saw something sus I don't really know how I'll react. I can pardon easily, and will probably try to dissuade him to do that... but actually if my best friend was a furry he probably wouldn't tell me, except if it's his whole personality, which in this case he's probably not my best friend. Idk.)
(People are just too complex to do some prediction...)