Brian crooned softly as he held onto the labrador's paw, kneeling at the foot of the bed. The fox rubbed over the backs of Tris' knuckles with his thumb pad soothingly as his other hand rubbed back and forth on the back of the pup's head lightly. "You can do this, honey. Sirius is going slow, and if you need to stop, you can always say so."

       Tris panted heavily. One of his arms was wrapped tightly around Brian's shoulders as the other paw rested in the fox's grip. The black labrador was mainly leaning into the blond fellow for support, both physical and emotional. He was a big dog, used to similar situations, but tonight was a fresh experience with sensations he had never had before. Muscles his mind was still working on mapping to his conception of his self contracted seemingly on their own as tingles of pleasure sent his arms trembling. "I... I know..." He nuzzled needily into Brian.

       Sirius, throughout this display, had been firmly holding onto Tris' hips, keeping them steady. His girth was buried a few inches into a set of black folds that the labrador had not possessed mere hours before. The white lupine lightly rocked his hips, smiling warmly. Seeing his friend trembling in pleasure was quite gratifying, and it would only grow more intense from here.

       "Now, Sirius has been a first for many boys first time having a vagina," Brian was murmuring soothingly. "He's practiced at this."

       The lab nodded, his dyed hair flopping in front of his eye. "I'm not worried..." He moaned as his hips flexed without his really thinking about it. The hands on his hips kept them from moving too much, but he managed to lay claim to a half inch of length behind him. "It's just... it's really intense."

       Hearing this, the wolf-dog transitioned from light rocking motions to an easy, pistoning thrust. The added movement made his own black hair sway and dance along his cheeks and neck, the longer strands almost forming waves in the oscillation of his head counter to his hips. As he accelerated the fat bulb of his knot came dangerously close to colliding with the fresh labia he was tending to, but he eased off before impending impact each time.

       Nuzzling again, the blond fox rested his face against Tris' own, crooning affectionately. "Now, you only need to say the word if you need him to slow down." Brian brought his hand around from the back of the pup's head to brush the heliotrope strands of hair from his eye, before settling into rubbing at the base of his ears with his index finger and thumb. "Sirius has excellent control."

       For a long while, Tris was silent. The lab panting heavily, eyes distant. Beneath his plump belly, his own black canine shaft was pulsing, insistently leaking in sympathetic stimulation from its opposite sex producing its own fluids to keep its intruder well lubricated. Just when Brian was starting to worry, Tris' eyes re-focused, and he quietly murmured. "I... I need the knot."

       At this revelation, Brian's cheeks flushed. "You know what'll happen if he knots you, right?"

       The black lab squeezed tightly on the fox's shoulders and fingers, his toes curling in kind on either side of Sirius' knees. "Yes. I... I want to be bred."

       Listening to all this, the thrusting hybrid watched the dog's demeanor, his need, his mannerisms... He began to thrust harder, no longer refraining from allowing his knot from colliding with the wet entrance between the hefty pup's thighs.

       Tris immediately gasped for air as the sensations grew all the more intense. Each strike with the knot ground firmly into his new clitoris. The labrador's whole body shuddered with each impact, before he started pushing his hips back more intently, trying to overpower the grip on his pelvis. His breathing was growing ragged as his sexes both leaked their lubrication eagerly, wires crossed somewhere inside or just sympathetic sensations between the related parts of his body. 

       Brian weathered the storm, holding onto Tris gently the whole way. The blond vulpine crooned to him soothingly still, but it was no longer platitudes. "You're going to be a wonderful mother, Trissie." He intoned close to the dog's ear. "So full of your chief's puppies..."

       Sirius slammed his hips forward with a wet pop and they didn't come back. The knot had slipped in, and the bulb of flesh was growing thicker. The star-eyed wolfdog gasped for air, leaning down to wrap his arms tightly around the chubby pup's chest as he felt his pelvic floor quiver. He was pumping his fertile seed directly into Tris' receptive womb, the first night he had one at all.

~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~  
     
       Tris slowly swum up to wakefulness. He had once again had dreams of that first night on his journey. He had lost exact count, but it was somewhere like six months since Sirius had claimed him. Thoughtlessly, the labby brought his paws over his belly. Where once was mere chub and softness was a taut dome. His navel had inverted from the sheer swell, and patterns were painted into his black fur.

       The pup found another paw stroking over his gravid belly. Sirius was awake as well, tenderly trailing his digits along. "Morning."

       Brian emerged from the blankets, kissing the outie at the apex of the pregnant belly. "Morning to you two... and all of you..." He addressed the latter at the dome beneath. A proper litter was inside.

       Tris wondered if he'd have a whole baker's dozen by the end of it. The idea was... oddly appealing. 

       Sirius gently eased his free arm under Tris' shoulders and scooped him into a more upright position. The white wolfdog carefully made his defined chest the labby's new pillow as he sat up in the bed himself. "Do you regret diving into all this so quickly?"

       The pregnant pup blushed deeply, but shook his head. "I... I knew what I was getting into... I'd do the same again..."