Board Thread:Suggestions Forum/@comment-25604636-20150421121028/@comment-26240225-20150505151143

Ocelots were considered "baby jaguars." by the Aztecs, so a jaguar would be bigger than an ocelot by an entire measure. Also, in mexico before the Spaniards came there were lots of deer, you can ride on deers, and jaguars were big enough to take it down and eat it. So...it is entirely possible (and for the sake of the mod) to let the player and npcs ride on jaguars.