Duke thrust forward a little faster as he grew closer to the edge. His long cock pounding her womb as he unceremoniously squirted cum from the tip of his red prick like a disconnected water hose being stepped on, gushing out in small spurts. Pushing hard for his final thrust, he slipped from Kim's grip before his knot could swell. Falling back down to all fours, his cock almost dragged along the ground. He looked up at her pussy and sniffed around, starting to lick all around her back side again, cleaning her of any juices that ran down her opening. Long swipes of his rough tongue slid up her pussy and over her tight star, leaving a long trail of saliva in its wake.
Jake was getting into his groove now, finding the perfect spot to make him feel so good as he fucked Kim's mouth. Now with Duke gone, he wrapped his paws underneath her underarms and lay his head down flat on her back. His long tongue flopped out lazily drooling onto the part of her back not covered by her coat. He was in heaven. He began slamming his hind quarters into her mouth almost as fast as Dexter until he began spraying her mouth with torrents of his sticky dog sperm. His knot quickly swelled even as he continued pumping and squirting, filling up Kim's entire mouth. He was lodged perfectly inside her now, although her teeth caused him a little concern, it didn't hurt very much. He gave a small tug to check the lock. No sperm was getting out of the human's mouth pussy, that was for sure.
Dexter had been getting ready for another round. When he cleaned his own cock with his tongue, he found himself getting hard again. His knot had still not completely shrunk but it was nowhere near it's full size. He slauntered over to his bitch after Duke was done with her and mounted her quickly, this time used to her height. His cock began pistoning away like before although this time the first hole he found did not lead to her womb. His lipstick head poised at her star-shaped backside and the second his paws locked around her midsection he pushed in with renewed vigor. The first thrust penetrated her and the next few slid his length further into her ass where he pumped her for a few seconds. Eventually his partially deflated knot was knocking on her entrance, hoping to join in on the warm fun. He whimpered after his first few thrusts didn't bury himself completely in the bitch's ass. He bit her shoulder in frustration, as if something she could do would make it work. Finally one more hard push and it popped right in.
Dexter snarled at Jake, displeased he was still using his bitch. It was his turn now. Jake, slightly scared, tried to back away a bit, but found he was still tied to the bitch's mouth pussy. He tried to dismount but couldn't find the right angle and stayed there looking at Dexter but no longer laying down on Kim's back. Dexter allowed it for now and continued on fucking her ass, surprised at how much tighter it was this time.