THE GENEROUS DONOR (PERCY)

Percy twiddled his thumbs as he sat on the exam table, anticipating the next hour of his life more than he could remember anticipating much of anything else. The Doberman Pinscher had heard rumors about this place from his friends, and only hoped that they would turn out to be true. From what he had been told, the nurses at this sperm collection center were very fetching overall, and often assisted in the gathering of samples quite interactively. Who would it be walking through that door? A sexy squirrel, a tight little mouse? He was already getting hard just thinking about it.

As it turned out, the door opened soon afterward, and in walked a gorgeous bunny babe, ample breasts poised out from her chest under a tight-looking white outfit with an equally voluptuous set of hips connecting her thin, toned stomach area down to delectable legs peering out from beneath a constrictive skirt. "Good morning, Mister Owens. How are we doing today?" asked the tan-furred bunny as she set her clipboard and pen on the tray nearby, straightening out her neck-length medium bob cut of jet black hair halfway covering bright silver eyes underneath thin brows.

“Doing just fine," said the athletic canine, bending over to flex his arms and flash a grin. "And you must be Dr. Rachel?"

"That's me," she said, extending a hand politely to shake his. "Glad we can be doing business together."

"You aren't alone," said Percy, shaking her dainty hand in his.

She turned to grab a set of vials from the counter and placed them on the tray next to the canine. "Everything checks out on your sheet, I trust you've been maintaining a healthy diet?"

Percy shook his head with a chuckle. "Lady, you don't know the half of it. Kale shakes, cleanses...I feel like a new dog."

"That's good to hear," she said as she moved the tray forward, grabbing two elastic gloves from the dispenser on the wall. "Now, I'm sure you already read our brochure, and you understand our methods of collection are a bit...'unconventional,’ to say the least."

"Another reason I came here," he said, sliding forward. "Supposed to produce better results. I'm not gonna argue with that notion, anyway."

"It has helped us tremendously,” said Dr. Rachel as she slid on her gloves for a tight fit. "We've successfully outdone all other institutions with this strategy." She allowed herself a barely-noticeable, yet devilish smile. "Seems to be getting pretty popular."

"I'll say," said Percy as he undid his belt before pausing. "So should I-"

"Yes, please go ahead," said Dr. Rachel with a nod.

The Doberman slid off his belt, then unbuttoned and unzipped his jeans, sliding them down to reveal his boxers. He then slid off his sleeveless shirt to show off his muscular pecs and set of abs. His thumbs hooked under the waistband of his undershorts as he slid his jeans the rest of the way down his legs, slowly guiding his boxers down after them with an already half-erect canine cock popping out. "Err, sorry," he said with a sheepish grin, now only clad in his gold necklace as he sat nude on the exam table and at half-mast. "Got kinda excited while I was waiting around."

"That's quite alright," said Dr. Rachel as she knelt down next to the tray. "Now, go ahead and step forward so I can get a good look at you."

"No complaints here," said Percy as he walked up to her, one of her gloves wrapping around his black canine rod and giving it a few firm strokes. He grunted at the first spark of sexual energy from the female’s touch, shuddering with the delightful feeling of her initial palpation. Her hands worked around his cock and slowly coaxed it to its full length, the knot busting out of his sheath as blood rushed to the firm erectness.

Her hands traced down to the knot, giving it a small squeeze as her fingers slid around every inch of it, probing it carefully. "Looks to be a good size now, so I'd say we're ready to go," she said. "Any preference?"

"Uh, I'm sorry...preference?" he asked with a confused look.

"Yes, you know...method of stimulation."

This part was news to him. Very good news, to say the least. He racked his brain for the best idea he could think of. "Well, it always helps when uh...well, I'm kind of hesitant to say this..."

"Don't be worried," said Dr. Rachel, his cock still firm in her grip. "Doctor-patient confidentiality is a must here, and we deal with all sorts of clients every day."

"Alright then," said Percy with a gulp. "I suppose if you started, uh...orally...sucking on it, maybe...and then, use your fingers for you know, a little backdoor action." He could hardly believe the words that were leaving his mouth, and the room was getting hotter as he continued to speak, but she spoke the words herself about confidentiality, so hopefully this would work.

Surprisingly enough, she gave him a wide smile and leaned forward. "Excellent, very popular choice! Let me know if anything becomes a problem for you."

"Heh, I can't really imagine that scenario," he said confidently as he presented her with his firm cock.

Dr. Rachel then leaned forward and parted her lips, a small warm breath escaping out onto the fleshy member before they wrapped around it, her throat taking in the pulsating length. Percy could hardly contain himself as he felt her mouth drawing further down his shaft, her hot and slippery tongue sliding around his length. Her hands remained on the knot, tugging at it as the tip of his dick nudged all the way into the back of her throat. She looked up at him as she sucked him off, working her head back and forth more quickly. He leaned back slowly against the exam table, spreading his legs apart to give her better access, and one of her hands slid down to caress his big furry canine balls before sliding a finger down to his rim and slipping it daintily into the hole.

Percy gasped out as he softly counter-thrusted, his tight butt squeezing around the invading digit. He almost had to reach down and spread his cheeks apart to allow her to enter, as it was not often he received outer stimulation to that region, and his resistance was almost instinctive. Nevertheless, her finger probed at the entrance delicately as her tongue slid around his warm cock, and then another poked at his rim, the two fingers entering him slowly. He gasped as his ass was fingered, feeling the cum churn in his balls already. God he wished he could unload into her mouth instead of the jar. He was lucky enough to be here anyway...it wasn't always so often that a partner would be so willing to please him in any number of ways.

As her fingers slipped past the first knuckle, a groan escaped the Doberman's mouth and his hard shaft leaked pre into the bunny girl's throat, her saliva spilling out onto his firm erection. She pressed them deeper in and slid them out occasionally, only to probe them back in and stimulate his sphincter while choking on his dick with all she could muster. As it jammed into the back of her throat, she attempted a swallowing motion, the warm soggy walls of her oral cavity constricting around his veiny shaft. His asshole responded by clenching tightly around her fingers as they worked their way into the second knuckle, then even deeper, as deep as she could possibly go. He stood up and groaned, sliding back and forth in her mouth as she slid her gloved fingers out of his ass momentarily to suck at them, tasting his ass juice, then slid all of her fingers deep in her mouth before pressing three of them against his rear cavity.

He groaned out as she pressed all three of them in slowly, her thumb massaging the area between his testes and anus as they traveled in, and she resumed choking on his cock with determination. Soon she even slipped her pinky in with the others, sliding all four of them back and forth to finger-fuck him harder and deeper. They all traveled in just about as deep as she could go, the Doberman moaning in lust at this point. She paused before pressing her thumb against his ass and squeezing all five of her digits into him. "Oh god..." he breathed, raising his tail as he lifted up his legs and laying back on the table. She leaned forward to deepthroat him as she pressed her whole hand into his rear entrance, the very last knuckles struggling to fit in his tight ass with difficulty. She slid it back and forth, stimulating him erotically while gagging on his canine cock.

She had the Doberman panting at this rate, choking herself on his rod as her fist pressed in, her whole hand finally swallowed by his ass. She smacked her lips off of his cock and licked her drool from it, looking him in the eyes as she did so while pressing her arm forward. "Is this too deep?" she asked, wiggling her fingers around inside of him.

He gasped as he bucked against her lips, receiving tiny kisses around the tip of his cock. "Mmm no...I can take more..." He spread his ass cheeks wide open, humping against her hand and mouth as she continued pressing her fist in, leaning down to suckle at his nutsack before licking all around the knot and driving him insane. "Oh Christ, I think I'm gonna..." He stood up and leaned forward, her fist still inside of him as she steered the tip of his dick above the first vial while stroking his length faster and faster.

"Good, that's good! We're going to fill up as many as you feel comfortable with." Her soft words sounded out near his cock as she licked at it and jacked him off, moving her wrist in and out of his ass tunnel to further coax his orgasm.

Sure enough, the table began shaking as he reared back and forth, roaring out as the first few spurts of doggie cum shot out over the edge of the vial while the bunny carefully guided the rest of it into the tube as her hand worked him. He shook with ecstasy as he came, moaning out as his ass clenched around the hand inside of him, practically driven into a lust frenzy as his balls unloaded gobs of cum into the receptacle by the stimulation of the sexy Doctor helping him along.

Spurt after spurt of his sticky seed flew into the vial, filling it up before Dr. Rachel's eyes widened and she had to move him to the second one, filling it up nearly a quarter of the way before his orgasm eventually subsided. He panted out of breath, the sticky substance dribbling down his cock as she slid her hand out of him slowly with a popping sound, cleaning the cum from his filthy rod with her gloved hands. "That was very good," she said, impressed as she wiped him off. "We're making progress."

"Glad to hear it," he said, panting on the exam table with his ass widened and sore from her intrusion. "Might take a breather..."

“That's quite alright,” she said as she changed her gloves, examining the contents of the vials with excitement. "This looks like quality stuff. We'll have to take it to the lab for further investigation but at this point in time, if you are as potent as our records show, then we could surely use all that you can give us."

"Really?" asked the Doberman, regaining his composure as he sat up with his shaft still erect. "Well, in that case...what do you recommend next?"

"I'm sorry?" asked Dr. Rachel with a laugh. "Well, I don't know really what I would 'recommend' per se; our patients all have different tastes and ways we can ensure the best output individually. Of course, at this stage and further on, sometimes it does help if the healthcare provider in question disrobes and engages in direct bodily stimulation."

The canine blinked, trying to process what he had just heard. "You mean...we can, uh...interact?"

"Of course," said Dr. Rachel with a smile while walking forward. "That is, if you're comfortable with that."

"No objections," said Percy, hardly believing what he was hearing.

“Perfect," said Dr. Rachel as she turned around and unzipped her uniform, setting it on the counter next to her and undoing her bra before pulling off her skirt, then turning around clad only in her black satin thong at this point, a pair of perfect tits hanging below her smooth neck and face to complete the tan-furred body of a goddess. "Is there anything you’d like me to do for you in particular?"

All sorts of ideas came to Percy's mind before he finally grunted decisively, standing up and approaching her. "Well, have you ever had any ‘anal’ stimulation yourself?" he asked, standing inches from her as both of them were just about naked, his masculine scent storming the bunny girl's nostrils as she stood under his figure.

She smiled and folded her arms, flicking a lock of hair out of her eyes. "Well, not especially...but of course, I'm always willing to try new things to help our clients."

"That's good," he said, sliding his hands down her thighs to her black thong and hooking his fingers under the sides of the straps. He then began sliding them down her legs, kneeling to bring her thong down to her ankles and placed a hand on her side, turning her around to face the counter. "Don't worry, I'll get you good and ready beforehand."

She placed her hands on the countertop, blushing and a bit intimidated by his large and still-throbbing canine length as well as what he suggested he might do with it, yet unable to find within herself the ability to resist. She bent over and spread her legs, lifting her tail to expose her perfect pussy beneath the tightest asshole the Doberman had ever laid eyes on. He slid forward to spread her delectable butt cheeks apart, taking in her female scent as his fingers crept closer to her more sensitive areas. Finally his tongue slid out, and he began licking the lining of her cunt, probing the entry of her anus with his thumb.

She groaned out as she looked back, weakening at the knees with the sensation of his unexpected move. Her rear lifted and gave him the best access she could as his thumb slowly slid into her tight pucker, the Doberman's tongue sliding into her cunny hole. A gasp escaped her as she found herself bucking against him, her face reddening with excitement and her tail twitching from the stimulation. "R-really, that's not necessary..." she stammered, trying to keep a grip on the counter.

“Oh, but it is," said Percy as he munched at her soft pussy folds, jabbing his thumb in deep and fucking her ass with it. "For me."

She tried to regain her composure as she stood there receiving pleasure from her patient, but all she could do was breathe heavier and find herself lost in a world of feminine desire. "A-alright, then," she said between breaths, softly countering his movements as his thumb slid in and out of her, his lips connecting with her lower ones as he ate her out like mad.

His wet, hot tongue wriggled around inside of her, saliva and pussy juice dripping out and sticking to the fur of her upper inner thighs. She panted heavier now, feeling more pleasure by the moment as he continued. His tongue slipped out at several points to travel along the length of her vaginal opening, flicking at her clitoris and eliciting cries of surprised delight. Her privates were soaked by now, dripping her female juices down her legs and all around her.

Finally he sat up and pulled his thumb out of her ass, then slid his fingers along one of her inner legs to collect as much spit and feminine pre as he could, coating it all around his fingers before pressing the wet digits against her tight rump. She moaned out as she felt him do this, the wet sticky feelers probing into her, and she flexed to try and make it open more. One of his fingers slowly slid in, then two. Soon he was finger-fucking her as hard as she had been him earlier, eating out her pussy from behind as she shook like wild.

Eventually her privates were all so coated in her own juice that he felt it was high time to stand behind her and press the pointed tip of his dog cock against her ass, sliding it in between the cheeks and easing it into her sphincter slowly. She moaned out as he progressed, grabbing her rump to force his way inside, the veiny member pulsating against her hot inner walls. More cunny juice ran out as he pressed in further, reaching around to knead one of her soft glorious tits and grunting with satisfaction as he pressed as far as he could, the knot resting against the outside of her anus.

His thrusting was slow at first, but then increased over time as he held her there, mounting her and fucking her tight asshole with sound slaps of his knot against her rear. The pain was incredible for her, but the pleasure matched it as she panted heavily, looking back into his eyes and flexing her ass as tight as she could around that canine member invading her rectum. His hand reached around to finger at her pussy, causing her to gasp and grab for the edge of the counter, the bunny leaning down and spreading her legs further.

The tips of his fingers slapped against her cunt lightly, rubbing it and smacking it at different intervals, keeping her guessing as he pounded her hard. "Mmm fuck, you've got such a tight ass," he said as pre dripped out from him into her warm anal cavity, soaking her insides with his Doberman essence. He leaned down with her to knead at both of her tits, smelling her neck deeply and grunting. "I wanna have you as much as possible."

"Ah...no promises," she said with a smile, groaning as he felt her tits. "But I can put in...a request...OOOHHH!" She returned his thrusts with counter-movements, gyrating her ass against his powerful canine cock. Her nipples perked up as he groped her and leaned in to sniff at her neck. He was good, that was for certain. She tried to keep from judging her patients, as what they were undergoing was considered "strictly professional" in her line of work, but that didn't stop her from enjoying it thoroughly whenever she got the chance.

"Nnngh that's good," he said, sniffing at her more and reaching down to grope at her asscheeks like he had her tits. "I wanna request you as much as...oh...AHH!"

“Hurry, into the vials," she said while turning as he pulled out of her, the sloppy noise of the pre and cunny juice slipping out of her gaping asshole with his doggie cock. She grunted and leaned down, still in pain from the movement, but slid the tray forward as her gloved hands worked his cocklength. "That's good, right in here," she said reassuringly, groping at the knot and squeezing gently to ensure maximum stimulation.

He gasped as the first rope of his seed shot into the air right into the second vial and was soon followed by more and more jets of sperm, filling it up and moving onto the third one. A cry sounded out as his hips shook, insane pleasure coursing through him as she squeezed his knot, his butt cheeks tightening together. "Mmmfuckyeeeahhh! Auuuughhh!"

She licked all along his veiny dog dick, using one hand to jerk his length harder as the other groped at his canine knot firmly, soft moans escaping her lips as she kissed the firm rod. She licked over to his wonderfully-sculpted ass cheek, kissing his hip as she looked up and admired his body while it shook with the spasm of release, his face twisted in bliss. And another vial.

"Oh wow, you're really going!" she said, her eyes widening as more sperm kept unloading. "Yes, that's perfect! All you can give me!" She gave another kiss of approval to the side of his ass, stroking him furiously as his cumshots continued. Still in orgasm. "My god, are you okay?"

He looked down and nodded, gasping as the cum kept spraying wildly from the tip of his dick. "Ahhh fuck, sometimes they take a whiiiile...oh Jesus God mmmmm fuck yes, don't stop!"

He leaned down and put his hands on the counter as he kept cumming, filling up the fourth vial before moving to the fifth. She got behind him and traced her fingers around his ass as her other hand kept working his cock. "That really must hurt," she said with concern. "Are you sure you're okay? I didn't know a man could be hiding so much cum..."

"Oooh God, finger my ass!" he cried, bucking against thin air over the vials as she stroked him like mad. He didn't have to ask twice as her middle finger crept in again, this time sliding it in hard and deep as far as she could go. This elicited a gasp of unparalleled delight from the Doberman as he yipped, his legs bending and the cum continuing in a never-ending shower of canine sperm. She slid the finger in and out, kissing and licking in little swirls around his asscheek as she jacked him off into the final vial.

"Yes, I'll definitely have to recommend you," she said, pleased. "With this much content every time, we'd only need one appointment every month!"

At that exact moment, his orgasm stopped and she knelt there awkwardly, her finger still inside of him as cum drizzled from his exhausted cock. He panted and turned to her, his tongue hanging out from exhaustion.

"I think...I think I'm done for now."