nope, being into furry things is generally what defines someone as a furry but you aren't a furry until you say so yourself. It's a casual hobby after all, and you don't need to consider yourself a furry unless you want to.
STUPID QUESTION; IF YOU HAVE AN INTEREST IN STUFF SUCH AS ANIMAL MASKS AND ACCESSORIES BUT NOT NECESSARILY FUR SUITS AND DON’T CONSIDER YOURSELF A FURRY; ARE YOU A FURRY