Recently, my best friend from high school told me his gf (from the same school and I had classes with her) was a kitty fur when I asked. So now that makes it two (aforementioned best friend being the other). We can say three once our other friend, Amber, ever decides to take her interest in furries to a new level. Her uncle is a dragon fur that used to fursuit, so I kind of know another fur vicariously through Amber I guess.
Although, I don't know if my best friend's gf is really a true furry, and is just saying she's one just so she can be closer to her bf via sharing similar interests. Knowing her intelligence level, I doubt she really knows what it really is. Both of them aren't too bright to be honest.