This skill governs the ability to ride and control an animal while being ridden. While riding a non-trained animal in combat, the character will have to make a Deftness CST check every round as not to be thrown from the animal. If the character uses one of his/her actions to maintain a grip on the animal, the character will average his/her Deftness AST with his/her Beast Riding skill. The definition of a trained animal is up to the GM. While riding a trained animal in combat the character will have to check his/her Beast Riding skill every round, unless the character uses one of his/her actions to maintain a grip. Then no roll is necessary, unless the animal is struck, then the character will have to check his Strength AST to maintain a grip.