Johannes had gotten a goth outfit for the costume party tonight. He and his girlfriend Jenny were going as a matching pair.
Jeff's brother was only wearing the dog collar. He had clipped the collar on and was about to slip on some underwear, when he felt his tail bone shift and pop. He reached for it and felt a short nub.
"Huh?" Johannes felt a tingly wave move through him. The nub wagged in response. Johannes looked in his mirror in confusion. Right above his butt was what seemed to, a small tail.
Johannes felt another wave pass through him, and his tail wagged again. He couldn't help but enjoy the feeling of the wave passing through him. It felt great ,and also made him feel a little turned on. In fact, he could feel a rising erection.
Jeff watched as his brother began to pleasure himself. his foreskin attached to his stomach, as Black fur grew from Johannes' chest and began spreading to his back and limbs. His chest popped and cracked as it pushed out.
Johannes started breathing heavily as he leaned against his bed for balance. His fingernails turned black, thickening into sharp, curved claws, as his palms swelled with new pads. His feet stretched out, growing pads and claws too, as they lost their human form to the invading fur, turned brown as it reached his hands and feet. "W...what's happening to me?..." he gasped out.
Johannes whined as his fingers shortened, loosing their ability to relieve the growing pressure in his loins. He balanced awkwardly on the end of his bed, lost in the moment as he tried to mate with his bed sheets. Fur spread up his neck while the final changes swept across his body. his ears grew bigger and pointed, moving up the side of his head. Eyes turned a dark brown and his nose darkened and became damp. "Feels...good..." panted Johannes. He let out a long howl while his face pushed out and his throbbing dog dick erupted dog sperm all over the bed, and all over the costume that would never be worn.
Johannes could barely think as he sat down and began to clean himself instinctively. Had he just turned into a dog?! That didn't make sense. He was a human, right? Wait, hadn't he always been a dog? Two sets of memories were in his mind. He tried to figure out what was happening, but he could hardly understand his human side. A whistle from behind the door distracted him.
Jeff walked in and looked at his former brother, now purebred doberman stud.
"Hey boy! how you doing?"
Johannes barked happily in response. He knew this person. He was his master... no... brother. He knew he had been human, but it was so difficult to think. His brain felt small, cramped with too much knowledge that he really didn't understand anymore.
Jeff smiled as the jizz-covered bed, and the rest of his brother's things, faded away, replaced with Jeff's things. Jeff read the tags now hanging from his dog's collar.
"Do you wanna eat... 'Joey?'"
Johannes wagged his nub of a tail as he followed his brother downstairs to the kitchen.
"Maybe Jeff knows what happened." Thought Johannes. He tried to think as he happily ate his first bowl of dog food. His IQ plummeted as he scarfed the last of it down. "Maybe I get more food too!"
After feeding his brother, Jeff lead him outside to relieve himself.
Joey took a dump in the yard, before running back.
"Joey love being Master's! Joey want play!" Joey's mind slowly let go of his human desires. His concern for his own plight washed away as Jeff scratched him behind his ear.
Jeff went back inside, with Joey close behind. He was excited about who else he could use the Chronivac on.