From publisher blurb:
Here Kitty, Kitty!
Every adventure is better with a faithful companion at your side. Legendary Companions is the latest volume in our series of player-focused supplements, dedicated to your character’s best friends- because familiar, animal companion, bonded mount, eidolon, phantom, and drake are classes in their own right and deserve a manual dedicated to them! In this book, you will find expanded rules for familiars tied to bloodlines, domains, and arcane schools; new rogue talents, eidolon evolutions, and phantom emotional foci; a new druidic domain, a hunter animal focus and a drake power; archetypes for characters focused on their rapport with a companion, or allowing classes without companions to take one; companion-enhancing mythic abilities; new feats (both normal and mythic) adding new abilities to companion creatures and blurring the lines between familiar, animal companion, and cohort; new magic items, especially a plethora of never-seen-before figurines of wondrous power to use either as temporary or permanent companions; rules for intelligent animal, aberrant, outsider, and magical beast companions; and of course many monsters both old and new to take with you in your epic fights against monsters and demons!