My story is a little different. I didn't get interested in zoo sex until I was much older. My divorce was finalized my horrible marrage and I wanted nothing to do with an involved relationship anytime soon. My curiosity and longing to try new things, including sex, led me to be more open minded. I experimented with other men, the BDSM scene, swingers groups, etc. Cut forward a few years and I welcomed my first K9 partner into my life in a role beond my pet. He was a mixed breed Doodle and was smart as a whip, sweet and honestly a easy puppy to train. In all sense he was a wonderful dog companion in a traditional role. When he became mature at about 2 years old we started experimenting with so I could guage how we would react in a sexual situation. Getting him used to his genitals being touched, having a full knot and have him associate certain signals to breeding.
I eventually got in contact with a woman from BF and after all the safety vetting we agreed to meet for coffee and chat in person not intending to do anything but meet face to face. We arrived and sat outside a chain coffee place where my bud could lay down and watch the people walk by while she brough out two coffees. After over an hour of chatting about all kinds of topics, "buddy" needed to go. She stated her desire to take things to the next level while we walked him in a wooded area just off the parking lot. In our earlier emails and text messages I had mentioned that I wanted her to tell me up front where a line was as far as my participation. I only required that I be present both for my physical enjoyment of watching but also my dogs safety. From the start I have never required a woman to agree to do anything sexual with me in exchange for activities with "Buddy". She stated she felt comfortable having us back to her place right now and I could watch, touch myself, touch her to help but as far as sex she would see how she feels and let me know. I told her I was thrilled and we followed her on the short drive to a local apartment complex. After "buddy" marked a few spots around the grassy areas we went in. She suggested he have a few minutes to sniff around and get used to the place before we start plus she could change get undressed and put on an old t-shirt so he wouldn't scratch her back. I sat down and made myself comfortable while this was going on. After only a quick minute she came back out with an old O's baseball shirt on and nothing else. Now she wasn't some knock out, super thin model type. She was a typical, chunky woman who, if you saw her in the store, wouldn't think she would be involved in anything like this. That got me hard! The idea this rather ordinary woman was about to try and have sex with my dog while I helped and watched was a huge turn on. She must have been turned on also because "buddy" went right up to her and stuck his nose up under the shirt from behind. She giggled and bent over at the waist while spredding her legs. I asked if he was doing it right and she just shook her head and moaned. I asked her if she wanted to sit on the couch with her legs spread so I could see what he was doing and if she minded if I got undressed also. Without any hesitation she moved to sit down, lifted her legs and said she was suprised my cock wasn't out already. "Buddy" proceeded to lick her to a huge orgasm all while I was slowly stroking my cock.
"I'm going to see what he will do if I get down on the floor." she said after recovering from her orgasm. She proceeded to get on her hands and knees in the middle of the room and just called his name and petting him when he came by. She would sometimes crawl so he would chase her a little, sniffing her backside like all dogs do. When he would move around front she would feel his sheath, pull it back a little to expose the head of his cock, get him to hump her hand a couple pumps, etc. Eventually, after what seemed like 20 minutes of this foreplay he moved around behind her and put his front paws on her back and made an attempt at mounting but missing the mark by a mile and got down. She praised him right away making him even more excited and jumpy. This cycle went on two more times after which she said for me to help guide him in the next time. I got on my knees near them on the floor and when he came around again and went to mount I reached under and pulled back his sheath just to expose his tip a few inches. She repositioned her knees so her pussy was a little lower and I guided his now humping cock into her. As soon as he felt that tip enter her he just went for it humping her for about 20 seconds. I could see his knot pop in and out of her as it was getting bigger until it was too big to enter her anymore. I put my hand on his lower back and just held him there with his knot just outside her and his cock inside her. She was quiet except for just heavy breathing and said she was "just fine" when I asked if she was OK. She said she could feel him cumming in her and it already make her orgasm again. We stayed like that for about 5 minutes when "Buddy" hopped down. She went to her stomach with a squishy pussy "fart" and just recovered after a third orgasm. "Buddy" was standing just off to her side with his hot, swollen cock hanging and still ejaculating. She rolled over, scooted under him and proceeded to put her lips around him and alternated between swallowing and breathing while holding his knot in her hand.
When "Buddy" started to lose his erection she let go and he moved off to lay down and lick himself. She started to explore her face and pussy with her hands. Laughing at how much cum was on her. She got up to sit on the sofa while her pussy leaked fluids onto her thighs. Noticing my very hard cock she asked if I liked what I saw. I made a goofy chuckle and just pointed to my erection. "You can fuck me with a condom, I want to feel what it's like being full of dog cum while you do it." I got out one and went over to her as she moved her butt to the edge of the sofa. As I rolled the condom down my cock she pulled her knees back and I could see all the wetness around her pussy. Sliding into her was the hottest feeling as it pushed some of the cum out making it run onto my balls. We fucked like that for a few minutes and I blew a huge load into the condom.
I sat on the sofa next to her and we just recovered for a bit. She got a towel so we could clean up and a bowl of water for "Buddy". We chatted for a little bit and agreed to another meeting soon. She wanted to try missionary with "Buddy" and get a true knotting as well as try anal. "Buddy" and I left. We met her two more times over the coming months.