This does not make you a terrible person at all. In fact, I will admit that bestiality involving women and dogs is one of my fetishes.

I certainly don't feel therapy is necessary. It's not wrong, or illegal. You are not harming the animal, or using force. What one person finds disgusting another will find attractive. This not only goes for sexual acts, but with everything. Favourite colour, taste in men/women, favourite food, everything.

You are not forcing your pup to do anything. From my experience with watching such things, dogs are more than willing to engage in what you described, and an awful lot more, and are certainly capable of ignoring you if you want it but they dont. And believe me, they certainly know what is going on.

Have you asked yourself why you only do this when intoxicated? I find many people say or do things they daren't admit when sober. My dad often admits he thinks his marriage to my mother is failing when intoxicated, but never says such things when sober. Perhaps being intoxicated provides an excuse for it to happen? For example, a friend of mine, who at the time claimed he was straight, on three occations kissed a male when drunk, and when sober again claimed he was disgusted and that he never fancied men, etc. He's now admitted to being bisexual.

As for relationships, my fiance knows this, and although she makes the occational light hearted joke about it, she's fine with it. If it is the case that this is something you enjoy, but are too embarrassed to come to terms with it as society would deem this 'Sick and disgusting', then keep it to yourself. Nobody needs to know what you like. If you do want to tell someone, make it someone you can trust. Another question is whether you enjoy it or not. If you don't, all you can do is try to avoid it when intoxicated. If you do, why is it so bad? As I said before it's not illegal, and whether it is 'normal' or 'right' isn't an issue, as there's no such thing.

I'm certainly not saying this is the same with you, nor am I accusing you of anything, so if it seems that way I appoligise. Just my two cents on the issue.