i think disanima's point is that even if it's supressed, zoophilia is still a part of you. even if you never act on it, it's still a part of you. you may not realize it's there until later in life, but you've always been a zoo. it's somewhat of a semantic issue, but it's important to think about. one doesn't "become" zoo, they simply come to realize it somehow.
again, i think you mostly agree with each other, just see it slightly differently. i don't think disanima is talking about the sexual attraction aspect of zoophilia but simply being drawn to animals spiritually or socially or however you want to think of it.
also, i tend to believe that people can be born with the _potential_ to be different... not necessarily specifically gay or zoo or whatever, but just "different", and that personal experiences can narrow it down to something more specific.
basically nature vs. nurture -- in this case, nature (genetics) being a bit more vague, and nurture (upbringing, experiences) honing it in to something more specific (zoophilia, homosexuality, etc.)