Pure Intentions
The verminous beasts seemed to have been highly successful with their latest breeding cycle, and were quite capable of killing sheep. the cows however... "maybe two or three," raven went on, inadvertently answering his thoughts as they walked.
Hirsune
It's all just part of the hirsune breeding cycle. it's perfectly natural." something wooden like the nightstand, from the sound of it, struck the door hard from behind, shattering as it hit...
Swiss Mix - Chapter 526-550
We're very seasonal with our breeding cycles, much like our feral ancestors.
The Silver City Chronicles volume 2
Or as sacred as marriage to procreate...but most breeding couples are paired of convenience or under the demands of breeding cycles. male pairings are usually consummated of emotional attachment rather then hormones."
Mahiri's Quest: Expansion II
Taking pleasure from all sides has a way of working her up into a perfectly heated state, clenching down desperately on the croc's cock while her breeding cycle skips a few weeks and launches into a state of utter need.
Series Revised 2015
"i have noticed your change in behavior, typical of a breeding cycle coming to its peak." she sighed and lowered her gaze, embarrassed to admit it. "you have acted like a tough warrior and now you are trying to fight your own body.