They are in game and are a passive tame! To tame, use a rockarrot or Troodon kibble, put it in the last slot in your hot bar and feed it. Once fed, press 'e' to ride. At this point it will either try to buck you off or it'll run around. If it tries to buck you off, press 'e' again. Keep doing this process every time it tries to buck you off.

Equus' can be ridden with or without a saddle! Happy taming c: ❤