It was a hot summer day and Ravi, a young wolf cub, was taking full advantage of the beach.  The cool waves made great contrast to the sun and he’d just come off of building a sandcastle, needing a quick bathroom break before he returned to his parents to see what food they brought.
Unfortunately, he wasn’t going to find out.
He felt something grab his arm while on the urinal, his yelp cut short by sharp claws and a hiss.  “Make a peep and I’ll make sure it’s your last.”  He forced down the scream building up as the pain built, the larger white fox pressing up against his windpipe.  He felt ready to pass out as he was dragged out of the unfortunately empty restroom and into the nearby family stall, the door locking with a dreadful click.  Occupied.
Ravi was shaking, clad only in swimming trunks.  He was ten, his birthday having been in March and was starting to show signs of puberty; still very much a young cub as most of the changes were likely a year or two away.  None of that mattered to the fox, it seemed, as he looked the cub over.
“Strip.”
The wolf jerked up in surprise.  His eyes were shaking, trying not to look up at the adult, taller than even his father.  The white fur only heightened the piercing blue eyes and strong, muscular body, clad only in swimming trunks of his own, black to contrast.
“Take your trunks off, or I’ll do it for you.”  The fox glared.
That finally snapped him out of it, quickly tugging off the trunks and leaving them at his feet.  They were quickly snatched up, folded neatly, and stuffed into a large handbag.  There the wolf stood, nude and shaking as his fur dried, grains of sand still caught on his knees.  He could feel his heart race, but his eyes wandered to those claws.  He didn’t dare scream, but his paws went to cover his junk, as modesty told him to.
His captor was far more calm, looking his prey over.  There was no command this time, just a whine as the boy was spun around with heavy, powerful paws.  Paws that smacked Ravi’s away from his crotch and tugged to his side, leaving the wolf stiffer than his growing sheath.
“No sounds.”  The adult nodded to himself, seemingly content with whatever he saw, unfolding a tripod from the bag and setting it up, a camera attached and focused.  The red light went on.  “Sit.”  The fox pointed to the bench.  He obeyed.  There was some sort of ringing in his ears; his cheeks burned and his head hurt.  If he weren’t on the seat, he’d likely have fallen over.
“Spread your legs.”  The camera zoomed in, the cub’s cock in full view.  “Hold your cock in your hands.”  The cub obliged.  It was large for someone his age.  He bit his lip, trying not to make eye contact.  He knew this was wrong.  It felt wrong.
“Rub it.”  He looked down, then to the camera.
“I-”
“Rub.  It.”  The fox unzipped his pants and snaked his cock out of his boxers and began to lead by example.
He started doing so, clumsily.  It was always all good-natured when his friends and he pretended to do it, mimicking the voice comms from the older furs while in the midst of a firefight.  It seemed to be enough.
Then the fox stepped away from the camera.  Out of view, except for his penis.  It clearly caught the attention of the cub.  “Lick.”
Ravi visibly recoiled at the command, his mouth opening to respond.  He gagged as the fox clearly wasn’t having any of it and forced it in.  “One tooth mark and you’re losing your dick, got it?”
A terse nod.  His tongue explored the cock, slowly, nervously.  It was rough at first, but the saliva helped after a moment.  His attempts to back off were forced back onto the cock, causing a cycle of gag- suck- gag.  He quickly learned his lesson, finally let to pant and dry heave as the fox’s member slid out, shinier than before.
“Turn around.  Face on the bench, bottom up.”  There wasn’t much warning as he thrust into the cub with the barely-lubricated cock.  This time, he couldn’t help but yowl as the intrusion hurt.  A lot.  It didn’t seem like the fox minded the noise, however, as something rubber passed through his lips, long and large.  A pacifier.  He didn’t know, of course, but it was designed for growing cubs, just like him.  “Stop, please...” he tried to mumble through, but the show went on.
“If you ride it, it’ll go by faster.”  The fox had seemed to turn just a little gentler.  “Come on, rock back and forth like my daughter does.  There we go, kid, that’s how you do it.  Good cub.”  It was much too big for a virgin like him, but between the pacifier which quickly tied around his face with a ribbon and a free fox paw keeping his maw shut, all he could manage was sissy whimpers.  The cock went balls deep all of a sudden, and the lack of lube truly made itself apparent.  A glow of cyan from behind his vision and the pain in his ass went away, leaving his prostate pounded and the wolf bits at full mast against his will.
The fox, for his credit, only grunted as he rammed into the poor wolf.  Skin against skin slapped as the balls touched again, and again.  “Good little fuck.  Nice and quiet for Daddy.”  A decidedly wolfish smile formed on the fox as he leaned on the wolf, making his elbows bend and arms shake as he put his full force into every thrust.  “You’re gonna make a nice baby for me, aren’t you?”  The complaints stopped dead in its tracks.  His chin sparked with pain.  The wolf had drawn a bead of blood and the dark wolf paled.
The grunts and moans grew louder, being held back up until the guttural growling grew to a peak and hot spunk filled the young cub’s stomach, burning the inside with a new sensation.  That glow again as the discomfort reduced itself to a feeling of fullness.  The wolf collapsed as the adult finished, slowly exiting.  Cum leaked out, dripping from his tailhole.  The overwhelming emotions peaked, and the little black cub felt his eyes drifting closed, starting to shut down due to sensory overload.
It was not to be.  He jerked awake as a sudden rush of energy entered him, and he turned around to see the fox putting a syringe back into the bag, and the needle into a safety compartment.  “Not quite yet, my dear little cub.  There’s still some matters we have to attend to before you get to rest.”  He gave a kiss on the forehead as the still-panting cub laid where he was, his fight or flight response currently broken, like a dear caught in the headlights.  
Ravi’s eyes opened wider at the sight of the diaper.  He tried to moan through the pacifier gag, but a stern glance and off-screen claws shut him up again.  He didn’t need to move this time; the bigger fur lifted him onto the changing table in a diaper changing pose and proceeded to slide the diaper under him.  It was warm, and damp.  He shuddered.
It almost distracted him from the wolf coaxing his still semi-hard cock into a chastity cage.  Due to his size, it was a tight fit.  It clicked, and it hurt it a little, but the heavy metal was barely a contrast to the pre-wet diapers.  He didn’t know what the cyan color was still; he wasn’t hurting anywhere, which would have made him feel sicker had he been able to.
“Like it?  I had my little daughter prepare it for you.  I know you won’t piss in it yet, but it’ll help you smell like a baby fox.”  Powder and oil went on as the boy watched, frozen as the wolf prepared a plug.  Not nearly as large as the cock inside him, but with an easy pop, what cum still inside him was sure to stay.  Then the velcro ripped before the cubby diaper was taped on.  He had seen them on TV; they fit him snugly.  It was disgusting feeling another fur’s urine pressed against him like this, warm or not.
“There, doesn’t it feel good to be nice and diapered?”  At the cub’s frantic head shaking, he laughed.  “Don’t worry, you’ll get used to it.  As you will with this.”  He tapped the front of the diaper, making the cub wince as his cock throbbed against the confines, but nary a bulge could be seen from the outside.  His boner may as well have not existed.
He barely blinked as he saw a spraycan, the clacking of the inside preceding a full spray paint of the cub, turning his dark fur a pearly white in short order.  It wasn’t perfect- the diaper had gotten a bit, and some parts like his armpits were still sooty, but it was now the same fur color as the adult.  A small application of blush and mascara helped to sell the act.  Ravi coughed as the perfume went on.  “Baby fox, straight from the nursery,” the adult laughed, the stench of a different species covering his prey from head to toe.  He smelled pathetically weak and feminine, making sure he sold the part.
As did the swimsuit.  It was in a rich purple, with a rounded yellow star on the front.  It was a tight girl’s one piece in his size.  It did little to hide the diaper bulge, but that was fine.  It paired nicely with the purple crocs the wolf put on.  An observant onlooker would see how the spray paint stuck to the edges, but it was enough to fool a fur not looking closely.  It would do.  A wig with twintails finished the look, hiding the mane that his mother took great pains to style every day, and to a passerby the two of them looked no different than a father with his daughter who wasn’t all there in the head.  By this point, the adrenaline was wearing off and the lack of energy was starting to show.
“I’m going to take out the pacifier now,” the fox said, turning off the camera and packing up.  “I expect no more sounds.  Got it?”  His big, toothy smile got a nod.  The fox took the disguised wolf cub in hand and led him out of the bathroom and past the other beachgoers, who barely batted an eye at the disguised wolf and his kidnapper.  The waddle made walking difficult, especially at the pace that the fox set, his jelly legs selling the part.  All he could manage were weak yawns as they neared the parking lot.
Of all the people to notice, it was his parents.
“How cute!”  His mother smiled as they passed, giving the wolf pause.  He glanced at the cub, who was about ready to nod off.  Perfect.  With a grin, he turned to face her.
“Thank you.  She’s been a sweetie, but we’ve had to cut it short.  Poor baby’s had a bit too much of the sand and sun.  She’ll probably pass out in the car.
His mom smiled.  “Ah, yes.  A handful once they’re out and about, aren’t they?  Though I wonder where Ravi is, he’s usually back by around this time...”  She looked concerned, as did her husband as Ravi’s captor lifted him up - “Come on, sweetie, time to head home” - into a cradle, but instead of looking at the drowsy faux-wolf they instead looked to the waves and sun for their missing boy without much worry.
They would in a few hour’s time, but by then the cub was in a car seat with a five point harness and silken cuffs.  Tinted windows and a sleeping pill ensured his his sleep, the fox driving a long, long way away.