Thus Argo is given enough independence to feel like an actual animal separate from you, thus you control him in s manner where you feel you are controlling Wanda who is riding Argo. This is important because, while it might frustrate, thematically and emotively you need to be invested in Argo by the end sequence of the game for the narrative to work
:SotC fanboy hat:
Agro (not Argo) is a mare.