Because I grew up sucking cock and getting fucked, it was natural for me to begin fondling and sucking dog cock, too, at a very young age. My earliest memories are of a neighbour's very large Great Dane, named Buck. He was huge, but as docile as a kitten. To accommodate his size comfortably, he had what seemed to me an enormous dog house. Buck had to lower his head to enter the dog house, but I could walk right in. I was that young, that small.

It was in the privacy of Buck's house that I began playing with his balls and massaging his cock. That soon led to my sucking his balls and licking his butthole. Nothing seemed strange to me. It all seemed natural. Every day, after all, I was doing the same with my father. I was delighted to see the red tip of Buck's penis when I pulled the fur back. First, I licked it, then I sucked it. While I was sucking, I gently squeezed his balls. I licked and sucked his balls, too, and went back and forth from his balls to his butthole.

This became a regular affair for us, just the two of us. The neighbour was gone a lot. He was single, and was apparently striving hard to make a name for himself. Buck had the yard to himself. When he saw me, he ran to his house in anticipation of our session together. Those sessions got longer and longer. Buck's cock was now fully extended. I sucked and sucked. I licked and licked. I could taste his cum – a little at first, then more and more. I wanted that cum so badly.

I was not seven yet; so my father had not yet fucked me in earnest for the first time. I had been begging him to do that, all the more so because of my sessions with Buck.

Most of the time, I sucked Buck's fully erect cock when he was standing. When he was lying on his side, though, I still could get him aroused. Curled under his chest, I pushed my already well-used cunt up against his giant dick. As soon as he felt himself inside me, though, he would jump up to engage fully, to fuck me 'til he came. Damn, I wanted that cock inside me. There was just no way – at least not as my age limited my knowledge and experience with the logistics of dog fucking. I was too small.

Very early on, however, I was able to take advantage of this initial misfortune. When Buck jumped up, ready to fuck me, I grabbed his cock with both hands, and sucked for all I was worth. Oh, the joy, the bliss, the transcendent elation, when Buck came fully in my little mouth. Of course, I could not swallow fast enough, but I got most of it. I would do better next time. In my sublime appreciation, I continued to lick and to suck Buck's cock, balls, and butthole. He appeared to understand completely. I was now his bitch. From then on, he could fuck me every day. We would continue to work on the real fucking for as long as Buck was there – another couple of years – but without assistance, we never quite managed it. Nearly daily, though, I would get him excited enough to cum in my mouth.

Buck's owner, as far as I know, never had a clue. Buck was his submissive, just as I was Buck's submissive. I had given my father the short and sweet version of my time with Buck, but I kept the juicy details to myself.

One of those very juicy details was this. To convince Buck of my uncompromising adoration of him and subordination to him, I would follow him out to his shitting corner under the big tree to watch him shit. When he was done, I would pick up his fresh shit, follow him back to his house, and eat it in front of him, letting him smell my breath. I would then lick his butthole clean while I played with his balls and cock. Needless to convey, he got the idea very quickly. To get his cock and has cum, I would do anything for him.

Buck and his owner moved away in a couple of years. By then, I was already exploring other canine options. My father and I were also getting closer and closer to our rendezvous with destiny.