The dog and the horse
He groaned out that last whine his fingers sank against his expanding flesh. the stallion's stomach wasn't the only thing that grew, though. as the canine's orgasm continued, more and more of the stallion began to swell.
Rise of the Werehyenas
Their loins were expanded, leading to thick sheaths and heavy balls. when they were not hunting to feed the clan, a good portion of the day was filled with heated and wild mating sessions.
Under Tail Behind The Barn 2
His cock was slowly expanding, growing more firm with each passing second.
Commission : The Stables 2
The muscles on his legs began to bubble under his skin as they started to expand outwards, his calfs bulging backwards as his thighs expanded outwards.
Heaven and the Size Changing Toy - Short Story
He shuddered, feeling his arousal beginning to grow as well, his giant fuzzy sheath fattening out from his belly and rising noticeably as his heavy, dark blue unicorn cock throbbed and expanded within.
Julius' conquest - Prelude
Julius' shoulders broadened, his pectorals thickened, his nipples expanded, his biceps swelled.
Jack the Bull
But what he could see beyond his chest was the further expanding of his cock, it growing all the larger but also changing in shape somewhat, the underside developing ridges that looked sort of...reptilian.
Cockzilla
The preaure expanded within it, the hot sticky semen was begging to come out and cockzilla could deny nature no longer.
Making the Cut
Much to his surprise and delight he felt the elf's maw that was wrapped around his cock expanding and stretching with each thrust.
Perhaps it is you who is Inhuman (Horse TF/TG)
The shade of her expanding gum line started to blacken in places, giving them a more mottled appearance as they continued to expand around her new blocky teeth.
Gordie and the Big Bugs
With a final slam from both, gordie felt his stomach expanding even more and very rapidly. hot cum was jettisoning from their cocks at about the same time, firing in large gushes.
Gotta Go! (Watersports, cock growth)
The growth resumed too; every milliliter of piss causing his cock to expand that much more in its tight cloth prison. he grabbed his crotch, the pressure incredibly painful, both from his bladder and from his expanding dong in his underwear.