Okay- so I've looked around the site for the answer to my problem. It's not quit there... I'm seventeen, almost eighteen in a month or two, and well.... let's just get the basics clear. I have an inferior complex, when I was little my female cousin(13) took me(8-9) and my little brother(2) into the closet to show us how sex worked. It ended in me grinding against her and a serious make out. Since then, I've been easily turned on. Well, now it's years later- and I have two dogs. It first happened on accident. I was masterbating and my dog came up and started licking me. Of course, it felt good. But I knew it was wrong... and I was ashamed I liked it, so after a few times I stopped. Now it's half a year later and I can't help but think about it and I'm ashamed. Is it normal for this? And even if it is, is there a way for me to get rid of these urges? I even gross myself out...

Not everything that's good we are comfortable with, and vice versa. You enjoyed what happened, but weren't comfortable with the idea. I think you were right to refrain.
The only suggestion I can offer is to try to copy the feeling. Lube up, try some toys, and find a guy who enjoys eating you out. :)
Second, to be turned on by your dog does show that you have some things in your life that do bother you and no, you should not allow yourself to continue to explore this "abnormal" behavior with your dog but, IT IS NOT DISGUSTING.
So what would my advice to you be? 1) do take the time, if you haven't already, to talk to a real professional, face-to face. A counselor, not a psychiatrist. Let the counselor make that recommendation if need be. 2) If you have a boyfriend, confide in him and communicate to him that you are probably "kinkier" than he is and that you would like to explore that with him. That does not mean you have to tell him about the dog but be HONEST and try to show him just how horney you really are, you may just find that your relationship either becomes more satisfying or that you end up being given your freedom to explore a relationship with someone that will satisfy you more, both physically and emotionally.