Triceratops Social Behaviour

In this video you can see the process of some Triceratops, a male and 3 females, perceiving each other and settling on a leader for their group. The little blue vertical line going up into the sky from the Triceratops' torso shows who the leader is; the one it settles on here is a male due to the settings I specified. Then you see them moving around a little bit before heading off in the same direction. This is an attempt on the part of the Triceratops to avoid running into each other as they move -- someth