Mike yawned, waking up as he heard a heavy thump coming from the front door, followed by the clank of the mail slot closing and clattering. Sliding out from under the covers, he stood up and stretched, his long lithe body naked except for his boxers. The young man's tanned skin was a little hairy on the chest, with more dark hair on his arms and legs that was an indicator of some of his Italian heritage. Scratching a little, he walked out of his room, only to suddenly be greeted by the big warm body of his dog Jake, a huge and affectionate white pit bull terrier. The heavy dog nuzzled and licked at his face, standing up on his hind legs and making Mike laugh and push him down, petting the dog's pink-tipped muzzle.
"Down, boy! I'll feed you in a sec, just getting the mail." Mike wiped dog drool from his face, then walked over to the front door, leaning down and picking up a brown paper package which turned out to contain a DVD case. He raised an eyebrow, not remembering buying anything like this. Walking to his room, he forgot temporarily to get some food for Jake, who sat down on his forepaws and looked at him with a canine expression of annoyance. Mike slid the disc into his computer, watching as it ran and booted up, revealing the opening screen of the Chronivac.
Mike scanned through the options, amazed by the huge variety of choices that were on offer. Instructing the program to find suitable targets, it immediately drew up wireframe models of both him and Jake, with suggested transformations starting to pop up on either side. Unable to truly believe the program's claims that it could initiate any transformation he could imagine, he shook his head, closing the window and standing up to leave it.
As he went into the kitchen and opened a tin of dog food, feeding Jake, he couldn't help but start thinking about what parts of himself he might change. While tall, he was not all that muscular, maybe he could improve that. Or make his dick bigger, surely something every guy fantasized about. By the time he went back to his room, pulling on his jeans, socks and a t-shirt, he had finally decided that he had to try it, just once. Moving back to the computer, he pulled the screen up once more, deciding that it would be best to start the test on Jake, just in case.
"Jake! Here, boy!" The large dog immediately bounded into the room, tongue lolling as his thin tail wagged from side to side. Mike patted his leg and the dog walked up, placing his forepaws on his knee and woofing happily as Mike stroked his head. Setting the options quickly, Mike instructed the program the change Jake's fur to black, with a duration of permanent. He looked down at his dog, who seemed to be happy and unaffected. Gradually, though, his fur began to look darker, as if a shadow had been cast over him, but it grew deeper and more intense rapidly. The white fur became a deep glossy black, washing over the dog like paint until we was black all over, looking for all the world like he'd always been that way.
Mike could still hardly believe the evidence of his eyes, needing something more incredible to really prove that it worked, something impossible. He selected himself as the target this time, scrolling through the options before he found one that seemed sufficiently bizarre that it would prove the program's power. Selecting it and setting the timer for ten minutes, he unbuckled his jeans, pulling the fly open and sliding his boxers down to let his cock flop down over his balls. Gradually, his dick began to harden, making him grunt and twitch as a sharp, firm sensation pushed up through his sensitive flesh. He touched his dick, feeling a firm rod within it, the feeling of a canine penis bone. His foreskin began to pull down, drawing around the base of his cock as the rest of the organ's skin began to deepen in color, turning a bright red. His cockhead sharpened , twisting up into a point. The feeling of his manhood transforming was bizarrely arousing, and he began to pant, his tongue lolling out like a dog's himself, the base of his new cock thickening and inflating into a hard, round red canine knot. Finally, he was left with a hard, bobbing canine erection between his legs, proving that the machine did what it claimed to.
Jake's ears twitched, his nose flaring as he inhaled the unexpected scent of another male dog coming from his master, making him confused and concerned.