He also works for a pet sitting company, so he gets to be around dogs almost daily. Some dogs are really small, and others are huge. He has been with many different types of dog breeds in the past few months, and some have bigger dicks than others. He has seen them with varying degrees of thickness, length and girth. Seeing their muscles ripple as they move, as if it was something that they do without even thinking about it. He finds himself daydreaming about having a cock like one of those studs, with fur around it. Being a dog, fully and completely. He even gets turned on by their tongues and imagines what it would feel like for him to have a dog's tongue.
This morning he is getting a female German Shepherd ready for a male stud. She has been in heat for a few days, and now it's time to see the stud. He is fully erect as he day dreams about himself being the male stud, being the alpha male, having many females wanting his seed. He imagines himself sniffing her from behind, smelling the sweet scent of her in heat pussy, feeling her warmth. He imagines himself mounting her and mating with her, like dogs do. He imagines that they are both in love and want nothing more than for their union to produce puppies.
He then feels himself start to change into a dog. He starts at the bottom with his feet and calves, and feels them shrink and become fur covered. Then comes his thighs, which become a bit smaller as they too become fur covered. As he watches, his jeans turn into dog hair, his boxers do the same, until he is completely covered in dog fur. His penis shrinks and starts to feel different as it morphs into a canine penis. He then feels his balls shrink and morph into a scrotum that now hangs loosely under his new canine penis.
Next, his abdomen and chest start to feel different, muscles form in places, and fur grows to cover every inch of his front and back. His arms shorten into paws, with claw pads at the end of each toe. His hands morph into paws as well, becoming almost like the front paws. His legs grow stronger as they become dog legs. Then his ass and hips become smaller and more slender. Finally, he looks down at himself, his transformation now fully complete. He looks in the mirror and can't believe his eyes as he sees a male German Shepherd staring back at him.
His body has turned completely into that of a large dog. He now has a canine penis that hangs from his groin. He lifts his paw and sniffs it, feeling the sensation of the fur, of his new body. His paws look exactly like a dog's paws, the fur covering them is thick and his nails are thick and hard. He moves his arms up and down, seeing how he can move them like a dog. His abdomen ripples with muscle as he does so. His whole body feels different, as if he is a dog, as if he has always been a dog.