Beyond Expectations 03 - Desires
"they thought that it would be too dangerous to create anthros back in the war days if they took away certain biological imperatives. i'm not just fertile when in heat, hon. i'm actively lookin' for it.
Jack of Diamonds: A Jack Crane Story
The sight, the scent, the feel of this woman reaching her peak with me all were enough to put my knot into lockdown, cock flaring out to capture that place inside her, the pair of us bucking wildly as i released my cream, filling her up as per the biological imperative
Birthday Gifts
It would have probably been fine if either of them had bothered pacing themselves reasonably, but once ewen's knot started ballooning, he had one biological imperative; breed the bitch.
Walk a Mile: A Friend's Fantasy
Actually enjoyed it, not merely engaged in it to seemingly satisfy a biological imperative? she'd never looked upon it as fun, more as an annoyance she had to put up with. how could she ever have thought of masturbation as a chore?
Racer's Reward
Muscles in his underbelly began forcefully contracting as hard as they physically could, obeying a biological imperative that his conscious mind could not possibly deny.
His Unwanted Digital Dick 2
That is a biological imperative for you, then?" she asked with a tone that told him she already knew that. “it…kinda happens after orgasm. it's meant to be a way to clear out the tubing and all that." “hehehe.
Beyond Expectations 05 - Assistance
He'd been told, over the course of several short breaks between sex, all about the biological imperatives that had been hard-coded into anthro genetics when they'd first been vat-grown for war.
Spermatosaurus Claim
Sergals were a bit better, meant to breed everything around and do it repeatedly, and he guessed that the monster that had infected him had a similar sort of biological imperative.
Star Trek Voyager- Social Lesson #42: Courtship
Mating, while a biological imperative, was still done almost solely for procreation and less for pleasure or bonding as it was with most other species. by the time the door to the cargo bay whirred open to admit her, seven had found the pertinent data.
Vale's First Brood - Part 2
To start a nest here and fulfill the biological imperative that the things infesting his body had imposed on him? all that need, all that desire was finally going to be fulfilled by the lion, his muzzle smeared with that oily black lubricant.
The Trouble with Idioms
All those biological imperatives had worked to perfection. now, one more: satisfaction. even as the pleasure receded, a sense of vast satisfaction swept through the waif, whose schooling in this most primal subject had been so woefully lacking.
Aggressive Negotiations
And she was powerless to resist the call of the most basic biological imperatives. she opened her mouth, eyes glaring up at him. the dark-furred balls dragged over her tongue, the mutt above her guiding her head to working at him.