"Woof! Woof!" barked Chad.
"Quiet boy! Sh!" hissed Kyle, as he rushed from the backdoor to Chad to quiet him. He hoped no one in the house had heard.
Chad grinned and walked around his fresh poop. Kyle suddenly understood, and said, "You want me to scoop your poop?"
"Woof!" nodded Chad.
Kyle sighed. Well, it was better than trying to explain to Chad's parents where the big human turd in their backyard came from. Kyle walked over to the trashcan, and found a paper bag. He used it to wrap and remove Chad's bodily waste. He put it into the trashcan.
"Happy?" Kyle said a bit humiliated by his own actions. He closed the trashcan lid, and started toward the house.
"Woof!" growled Chad.
"Now what?" sighed Kyle turning to face his dogboy master.
Chad walked around in a circle seemed to chase his tail. Kyle looked at his butt, and asked, "You want me to wipe your ass too?"
Chad growled and shook his head. Then he stuck his tongue back out, and made a licking motion.
"You want me to lick your ass?" gasped Kyle in disgust. But he felt a compulsion to obey, and Chad's had bopped up and down.
He was soon on all fours behind Chad staring at his butt cheeks.
He sighed, and buried his tongue between Chad's ass cheeks.
Tad giggled. He had reset Chad's submissive/dominate scale to 100%/0%.
"Sorry, bro, but I need Kyle inside of you to reprogram him," Tad said as he typed.
The pheromones emitting from Chad's thighs were making Kyle super horny. He needed to get relief. He looked at the slobber leaking from Chad's ass crack. A bit more, and Chad would be well lubed.
Kyle's beta tendencies were overwhelmed by his desire to cum, and Chad was being so submissive. He soon mounted Chad, and was taking him doggy style. He didn't notice the flashing red light, as Tad's video camera captured the performance.
"Bingo!" said Tad as soon as confirmed on the tablet that Kyle was inside Chad. A few more clicks, and Chad's opening fused. Kyle wasn't separating any time soon. Now to merge and modify. He wasn't losing Chad, he was gaining another brother. Kyle and Chad would temporarily be one, and once they were programmed into identical cock hounds, Tad would allow them to separate. Tad would be the most popular one at school now, particularly with the football team. He grinned. Chad was his fraternal twin. They were both 18, but Chad had a good 30 lbs on him, and was the better athlete - at least in contact sports. Tad played tennis and baseball.
Tad's alarm went off. He'd have to hurry up and finish with Chad and Kyle before the rest of the house got up. He thought briefly about turning Brad into a pup too. Maybe later. First things, first.