The Warhammer Fantasy universe has a raptor like species called "Cold one", used as mounts by Lizardmen and Dark Elves. Why are the creatures called "Cold one"?
2 reasons that I could find:
- It is a reference to the people that use them. Only cold-blooded people can ride them without a problem
- They see all warm-blooded things as prey, so they are the cold ones and the enemy the warm ones