Ray shivered as he touched his doggy cock. It was huge and glistened slightly as it seemed to be covered in some sort of musky smelling wetness.
The pink cock was grown out of a furry sheath that was firmly connected to his abdomen, which also protected his heavy balls beneath a dense layer of tawny fur.
The tip of his doggy penis oozed tiny drops of precum all the time and Ray couldn't resist in tipping up some with his finger and tasting it.
A slight whine escaped his mouth as he noticed what he was doing... but he enjoyed the taste of his doggy precum very much.
Bob was still scratching at the room's door all the time as he seemed to smell Ray's unwanted arousal. He wanted to get in and mate with the horrified and partly transformed human, Ray was sure of it. Smelt it. Felt it deep inside his changing body. Somewhere inside his treacherous mind and soul (he had intentionally transformed his best friend into his own sex slave only minutes ago, mind that!) he knew that he had no chance in resisting the powerful mating urges that crept their way upwards his consciousness.
While still slightly touching his huge doggy cock with the fingers of one hand, Ray noticed further changes along his body. The fur started to creep onwards from his sheath and started to cover his inner tights and his lower abdomen. He could see the fur grow from his human skin that turned to a tawny leather tone in it's wake.
His fingernails started to grow sharp points and moment for moment his sense of smell grew more powerful. Bob's smell of arousal started to impact Ray's mind like a hammer. Again and again, with every breath he took, Ray inhaled the musky smell of doggy arousal that radiated from his dog-transformed friend.
Without really noticing, Ray started to pump his doggy cock with his hand, slightly growling all the time as he did so.
As he pumped away on his shapeshifted cock, Ray could feel the invasive dog curse bite it's way throughout his mind, banishing the human spirit from his body and giving way for the oncoming transformation.
Ray could feel his first canine orgasm coming fast and the feeling of his huge knot growing out of his sheath was more incredibe and arousing as anything he'd ever experienced in his life before. As the fist-sized knot expanded to it's full size and Ray's stroking motings got faster and more demanding, he couldn't resist the urge to moan and whine loudly.
While tawny fur crept up his arms, Ray's doggy penis started to spray thick strands of hot doggy cum across the room. It splattered at the door and coated the carpet.
Ray couldn't stop stroking and stroking and stroking as the dog curse inside his soul howled in triumph and broke down the last walls of humanity, transforming Ray's soul and body in it's wake.
While Ray was still stroking his cock madly and his body's transformation slowly warped his human body to that of a tawny half-breed dog, the room's door opened...