"So, who will do?" The first test would be seeing how reactive the horses would be around the cats. They were naturally skittish animals, and they would likely have to survive battle stresses along with the presence of an active predator.
"Ok boy, let's see about you."
It's a laborious and painstaking process to try to work out which creatures might make the cut, and which will never be of use...and THEN there is the task of trying to make sure they are passable to ride.
Train draft horses up for scout cavalry-Animal Handling/Awareness-TN Unknown-VP spent:
9d10o10k4 32