After reading another except of Fox's DOMD in the translation forum, it just clicked how much JY used snakes in his novels.
Guo Jing and the giant snake (blood)
Condor vs. the giant snake
Yang Guo and snake bladders
The Golden Snake Sword/Gentlemen
Snake pits
DOMD - Divine Dragon (snake) Cult
Does he use other animals much? Only other recurring one is the poison toad.