Trainer gets trained

A few months after we got married we moved into a house in the country. A beautiful place on 2 acres. We decided to get a dog we both wanted. He was a 2 year old black lab she named Cesar. He was about 75 pounds and all muscle.
My wife, Christine, is a latina goddess, standing at 5'3" 145 pounds, with a 38-28-38 gorgeous body with a sexual apitite to match.she started training dogs about a year ago.
One Saturday evening we were getting a little frisky on the couch and it didn't take long for her to be completely naked. With her sitting on the edge of the couch I was enjoying the sweetness of her juices. I was fingering her slowly listening to her moan softly "oh yes baby make me cum make me cum." I caught movement out of the corner of my eye. It was Cesar, sitting about 2 feet from me with this wondering look. With my hand that was soaked in her juices I held it out. Cesar sniffed and then licked it clean. I then kissed my way up to her lips and said "Baby, you trust me don't you. Lie back and relax"
I dipped my fingers back into her wet pussy then offered to Cesar to see if he would come up to her. He slowly moved between legs and sniffed her sweet aroma. He begins licking her wet pussy and she jumps and says "What the fuck?" I had to calm her down quick. "Baby, lay back relax and enjoy. Let him enjoy your sweet juices." She said "Ok, mmmm, he does seem to be enjoying himself"
The more he licked it seemed he would go deeper into her pussy. She was really into now, "Yes, good boy, eat mommies pussy. Yes! Go deeper in my pussy! I'm cumming I'm cumming!" She shuddered into another orgasm. Grabbing Cesars head and pulling his snout in her wet pussy. "Yes! Yes! Yes! Lick my pussy deeper, get that tounge in there!" She collapsed she came so hard.
Cesar backed up a little and I could see his dick was hanging out of the sheath. It must have been about 8" long. I told my wife, "It's your turn to pleasure him now. On your knees, let him fuck you. You know you want it" She looked at me "Yes master, as you wish" She slid off the couch and turned and called Cesar to her. He nuzzled between her ass cheeks and began licking her asshole, which she was really enjoying. I put a blanket across her back and called Cesar.
He knew what to do, he mounted her and began humping finally he hit his mark. She screamed out "Oh yes! Fuck me with that doggie dick! Fuck me!!!"
I will say that I was extremely turned on, my dick was so hard, I positioned myself so she could suck my cock. She deepthroated my 8" cock like a little slut. We all came at the same time. I literally exploded filling her mouth, not giving her a chance to spit it out.
She screamed "Oh my! He is huge inside of me! His knot is so huge!" He was stuck inside her for a few minutes as she licked my cock clean. She looked at me with her gorgeous brown eyes and said "I guess you both just trained y'alls little bitch.
Let's just say this was the introduction to beastiality.