To Pyro:
A agree with AgermanDude on lots of points. I'm knowledgeable about the definitions and practices and I've been fascinated with beastie erotic stories and porn for 17 years.
Deciding on what your boundaries are, or will be, is important.
Does your guilt or negative judgments about zoo sex come from a religious perspective? Those perspectives seem more deeply rooted and less flexible for people to change, in my opinion.
Mother culture is pretty strong though, and religion is not the only machine that draws lines in people's lives.
Personally, I've become frustrated with my zoo/beast fetish because it has been a lonely road for me, especially since my craving is to be an assistant or companion to a female zoophile. Most of them online seem to be already married and on their kink journeys.
Other than being lonely and unfilled by having non-zoo girlfriends, I've been able to feel at peace with my fetish.