Understand that not every person that has sex with animals is a broken human being that has experienced trauma to end up this way. Many zoos, such as myself, grew up in a realitively normal household and knew of their zoophilic feelings pretty much as soon as puberty hit. Many zoos are just typical down to earth people that wouldn't stand out from your coworker nor the person standing in line at a checkout counter of a grocery store.
In the same regard, understand that not every person that has sex with animals is going to have a kink/taboo list 20 pages long. There are reasons to be in a zoophilic relationship other than sex, nor is sex a guarantee in the first place. But even if said relationship is of a sexual nature understand that many people still don't like kinks such as BDSM, Scat, Pee, Degradation, etc.
And lastly, THIS IS NOT AN INCEST FORUM. If you have an incest fetish you better keep it to yourself and keep your mouth shut about it. It's as simple as that.