Am i normal

When I was 10 years old I wanted to see for the first time the naked ass an the a**hole of my thick girl friend. She had to show it to me, I think I got my first orgasm without knowing what happend to me. Little time later she has to put her finger in my a**hole. I enjoyed it. An than some days later, in the night when everyone in the hous slept I led our dog (labrador) in my bedroom and showed him my naked ass an forced him to like my a**hole. This happened not only once, but nearly every night.
Today I'm happyly married but my greates dream is having analingus with to thick women. But I don't know how to find them...Is this normal or am I crazy? Please tell me