Hi friend, I do have a little bit of information to share with you today. Did you that in order to have the creature you are riding to become passive, natural or aggressive, you need to dismount your tame to have him/her to do what you want your tame to be on passive, natural or aggressive, you can't get them to be any of the 3 creature behaviors if you are riding any creature, and I mean any creature you are riding. I think that most people who play Ark don't know this, but I at least do, so you have me to tell you these things, so that's a bonus. Anyways, I hope this bit of information helps you out a lot and have a great day/night friend.