Equine Divine
His legs seemed to elongate, and the muscles and joints changing their orientation.
The Lion King's Filthy Habit
He could feel the tense muscles, he heard the terse breaths and the grunts, and he felt a tail tickle against his own thighs and knees, while the lion underneath him struggled to accommodate such a strong male upon him.
Lost in the Woods
"fuck...put it in me," lance whispered, nipping at the horse's ear as his hands squeezed his strong pecs.
Breeding the first girl
She moaned quietly when his strong arms laid her down on the soft moss.
Human Experimentation
His cells were budding and forking, invigorated with energy to make his muscles swell, and the effect was hardly limited to just his muscles.
Wolf Randy
He began to lose himself in the pleasure caused by the clenching and pumping of his huge muscle cock. the more he lifted the stronger it seemed to get and the more muscle it grew.
Now It's The Dobie Bros In The Locker Room!
The butt-banging intensified by the minute, muscles ached, sweat covered their buff bodies and the musk in the locker room grew so strong that you could have probably bottled it and sold it for great profit.
Lucario's Pet Trainer
It's apparently a super strong lucario hiding in the forest, apparently no one can beat him!"
Dragon Essence
The dragon's cock bobbed lower, his internal muscles forming a huge swell just behind his sheath, the black-purple muscle stretched his sheath like he was about to knot beau's thighs.
Dragoness Dreams
Then her muscles fell around him, squeezing tighter than ever. he thought he was going to cum, weakened member barraged from all sides by her lustful strokes, but her spasm was fickle as it was strong.
A Family Reunion
Veritable waves of mass traveled across the rhino, filling his muscles and causing them to grow steadily bigger.
Tales from the Nexus: The Candy Man
Not to be outdone, his chest began hardening, strong muscles building.