Yeah, as far as I personally differentiate, zoophilia is the attraction, bestiality is the act. The first is not a choice, but the second is. Not all people with zoophilia commit bestiality. Probably not all people who commit bestiality are even zoophiles- it could be about dominance, sadism or about desperation and lack of options...

As I think we've come to the consensus between us, it's not really about the animals, it is about your own sexual boredom and the need to find something exciting, which I guess would probably be something explored with a partner if you had one. I'm not really an expert on sex advice or how to combat this rising cycle of need but as others have said, a sex therapist might be able to help. As Sanchez suggested, if this is really bothering you, I know it will probably be hard, but if you can try to distance yourself from those sites and those ideas and try to divert your attentions to something else...