Chad blinked it was his mastiff Rex. What did his dog have to with the whistle and his secret admirer?
Rex turned to look at Chad. He rose up on his hind legs. His legs seemed to thicken. The thighs and calves
became human shaped but were still covered with black and brown fur. His barrel shaped chest flattened and
broadened.
Chad's tongue hung out as he watched Rex with growing love and admiration for his dog Rex. He had seen his
dog mount other male dog's to establish his dominance. At the times, he had been a bit disgusted. But now he
seemed to have gained a new insight. He stared at the erect red conical penis sticking out of Rex's furry
sheath and pressed up against a visible six pack of abs covered with rusty brown fur. Chad started to breathe
heavily as he stared. His own cock twitched and stiffened. He felt oddly jealous of those dogs that Rex had
mounted in the past. The scent of Rex's loins drifted from the hidden room, and drew Chad forward toward his
fate, toward his future. He almost knew what it was, but he didn't admit it to himself. He just knew he wanted
it.
Rex seemed to tower over Chad, as Chad knelt before him staring at his glistening red cock. He wasn't sure
how or why, but he knew he had to. He licked the glistening shaft. His tongue seemed impossibly long, but he
didn't seem to mind. The smell seemed to be much more intense. Rex moved to touch and guide Chad. Chad felt
the linoleum floor under his palms. He noticed that his arms and the backs of his hands were covered with a
thick short coat of fur. He seemed to shrink beneath the warm body of his master Rex. Master? Yes, master.
Somehow Chad was now naked, except for the silver chain with the whistle at the end dangling from his neck. He
felt the slippery rubbery hard cock run down his naked spine. Then it pressed against his rosebud. Rex's furry
muzzle pressed against Chad's cheek. Their eyes stared into each others.
Rex spoke in a guttural voice, "Chad, tell me you want it."
"Uh, uh," Chad moaned in a confused tone.
"Tell me you want to be owned by me," Rex said.
Chad swallowed, and then said, "Yes, yes, - just do it!"
Rex bared his teeth and wagged his tail. He plunged into Chad's virgin hole.
Pain and pleasure swept over Chad. Immediately he questioned why he had done this, and moment later he was
grateful. Rex knotted to Chad, and their hearts and breathing synchronized. Chad could feel his body changing
as the knot grew in him. When he was firmly knotted the changes continued. A tail had grown out of the base
of his spine. He was no longer on his knees, he was on his feet - all four feet. His feet and hands were now
paws. His broad chest had become barrel shaped. He had definitely shrunk compared to Rex.
"Ready to blow the whistle and renounce your humanity and become my dog forever, Rex?" Rex asked Chad.
Chad turned his head to look at Rex. Rex's muzzle shrank for become a canine humanoid face. It was a canine
version of Chad's old face. Chad's own face itched. His beard had grown to cover not just his chin and
cheeks, but now covered the bridge of his nose and forehead completely. He was a human dog hybrid just like
Rex. He looked at the fur covered fingers on Rex's hands. Then he looked at his own paws. No, he was more dog
now, and Rex was more human. Rex had called him Rex. Did that mean that Rex was now Chad? Or perhaps it
meant he would become Chad?
Chad bent his head to grip the whistle in his mouth. He knew there would be no turning back if he blew it.