When I first became interested in the whole zoo thing, I wasn't technically an adult. So, definitely not at first. I sure as hell wasn't about to open up to family about it, either. Nope, nope, nope! But once I became of-age, I did meet a few like-minded people online. One of which thought they were in the wrong for being into it, and never had anyone else to open up to about it.
Some of my non-zoo friends that I have met IRL do know that I'm into it... and I wasn't judged for it.
I haven't met a fellow zoo IRL (to my knowledge), yet. Though, I will likely meet the former person in the not-so-distant future.