Your close bond with an animal allows you to ignore harmful magic that cannot affect your wild side.
Prerequisite(s): Animal companion or mount class feature.
Benefit: You can choose not to allow spells and effects to effect you if they would not be capable of affecting both your original creature type and the animal creature type.
Original Text (prior to errata): “You can allow spells and effects that affect animals, animal companions, and special mounts to affect you, even if the spells do not normally affect creatures of your type. For example, you could cast animal growth or reduce animal on yourself, even though those spells normally affect only animals. An ally could cast raise animal companion on you to bring you back from the dead. An opponent could not cast charm animal or dominate animal on you unless you chose to allow the spell to affect you as if you were an animal.”
Pathfinder Roleplaying Game Advanced Class Guide © 2014, Paizo Inc.; Authors: Dennis Baker, Ross Byers, Jesse Benner, Savannah Broadway, Jason Bulmahn, Jim Groves, Tim Hitchcock, Tracy Hurley, Jonathan H. Keith, Will McCardell, Dale C. McCoy, Jr., Tom Phillips, Stephen Radney-MacFarland, Thomas M. Reid, Sean K Reynolds, Tork Shaw, Owen K.C. Stephens, and Russ Taylor.