I grew up in a house with an older sister and a large black German shepherd. This dog was aggressive to anyone that came to visit, with us he was tame. He would lie in the living room while we watched TV. The afternoon that we got hot about it, we were 14 and 12, Bruno's penis was out of his sheath. Not the first time, but that day we paid attention.

My sister commented that he had a penis but no pussy and that was sad. She sat down beside him and started fondling his sheath, his penis went out even more. She looked at me, took his penis in her hand and started massaging him, bent down and put it her mouth and sucked him. He moved but she calmed him down, sucked him some more and then told me to suck him.

At first I gagged but I liked it and sucked him while she massaged him. She told me to take off my pants and lay down beside him on my side and rubbed my pussy with his penis. She penetrated my lips, then she told me to turn over and give him my back side and push up close. Holding one leg up she inserted his penis in my vagina. Bruno stood up, his penis under him, my sister holding him, she told me to get on my hands and knees.

I wiggled under him and she maneuvered his penis in my vagina, he climbed on top and it went in a lot, but he got off. My sister got under him and started sucking him real hard. We tried to get him on me again, but he wouldn't hump, so we could only get his penis in me by him holding him. We were frustrated, she took off her pants and sucked him some more and rubbed her pussy with his penis.

I held his collar and pulled him on her, he grabbed her with his front paws and this time he humped. I went around back and pushed his penis in her and he went to town fucking her. We did not know about knotting, she just felt it, after about five minutes he released her and he pulled out with his cum splashing out.

She said she was ok, she had gotten scared, but she was ok. We went to the bathroom and cleaned up and got dresses, took the towel and wiped up the floor.

We sucked Bruno and he fucked us for the next five years, we became experts, he learned what to do, we could make him cum by sucking him and jacking him off. No boy can fuck you like a dog, no way. I have a healthy lab, I like large dogs, and he likes to fuck, sometimes my sister and I get together, sometimes it is just him and me, I get on my back on the side of the bed, get him licking pussy and when he is ready I pull him up and I get fucked.