From publisher blurb: Nature companions are often called animal companions, although are are also uncommon instances of plant and draconic companions, they all have an animalistic intelligence. Companions advance in stages, from young to mature to advanced to specialised. The stat-blocks for all of the young, mature, advanced and specialised companion options are included, alongside the published uncommon types companions, and nine new types. All stat-blocks have been reworked into the same format, offering much greater future flexibility.