Upon hearing that magic word, "moonlight," the couple spasmed, and then it began. Brenda, who'd momentarily lost her body hair after turning into a woman, began regrowing it with a vengeance, as luxurious ruffs sprouted forth from her body, which she caressed with her clawed hands. Sam, busy burying his nose in her crotch, watched his forming snout become lost in the mushrooming bloom of Brenda's pubes, and her fresh musk made him hornier than he'd ever thought possible, making him grow. He rose up to enjoy his body's steadying metamorphosis. Brenda grabbed at him, her voice now sexily low and feral as she beckoned him down. "No Sam! Oh! Oh!" She moaned as new globes of fur-sheathed flesh rose from her bosom, nipples glowing and pointed. "Don't pause! Do it while we change!" Sam looked down at his crimson, engorging organ, feeling like his entire body was undergoing one giant erection--pulsing outward in girth, spasming with white-hot pleasure, bulging with flesh as he threw his head back, searching for words but only managing a bestial, guttural cry of "aaoorrghhhhh," saliva and pre-cum streaking down his body as he plunged his mutating, quickly sheathing member into Brenda's moist, wet hole. Locked together, doggy-style of course, he thrusted and heaved together, breasts and testicles swaying, and with every heave they both seemed to swell as one with fur and muscle and fangs and muzzles, until they no longer cared or remembered that they had once been high-school aged humans, until they no longer understood anything but the compulsions of their transforming bodies and devolving brains. As the last memories exited their heads the rutting werewolves howled in ear-pounding unison, in the throes of mindless, endless lust.
They continued to slam their bodies into one another until the long moment of climax. The male's seed shot forth into the female, and then he waited for his knot to deflate. The now-impregnated female waited too, enjoying time with her perfect mate. Sunrise came, but no human was around to say the word, and so the mated creatures remained as they were.