Abada -- The Mating Chase
#5 of the bestiary the mating rituals of an african unicorn. 
It was then i realized it had to be a mating ritual, at least, in part. at last, they both rose up to the sky, and the inferno returned.
Electric Touch: Chapter 29 (mPikachu x fRaichu)
But some weeks ago, when they mated for the first time, he had to change radically his lifestyle for raichu's sake, as for pokémon, accepting the mating ritual was equivalent to marriage.
Shape Shifter the Begining
I had realized in my earlier years that animals had an advantage over humans, they had no elaborate mating rituals as humans have, for them if your bigger you get to mate.
Forest Keep 10
\*so it's a human mating ritual then?\* she asked with a glimmer in her eye as she moved carefully with him .