This man seems human at first, but a closer look reveals he has claws and sharp teeth.
Skinwalker CR 1/2
1/day—speak with animals
Str 17, Dex 14, Con 13, Int 8, Wis 14, Cha 8
Base Atk +1; CMB +4; CMD 16
Feats Power Attack
Skills Climb +7, Handle Animal +5, Perception +6, Survival +6, Swim +7; Racial Modifiers +2 Handle Animal
SQ change shape, track +1, wild empathy +2
A skinwalker can change shape to a bestial form as a standard action. In bestial form, a skinwalker gains a +2 racial bonus to his choice of Strength, Dexterity, or Constitution. While in this form, a skinwalker also takes on an animalistic feature that provides a special effect.
These benefits last until the skinwalker returns to his humanoid form as a swift action. A skinwalker must first return to his humanoid form before changing to bestial form again to change benefits. The skinwalker presented here is currently in bestial form, and has claw attacks and a +2 racial bonus to Strength.
Most people believe that skinwalkers are half-breeds of lycanthropes, or that they possess a weaker version of the curse of lycanthropy. However, skinwalker shamans claim that their people were chosen by the gods as a bridge between humanity and animals. Either way, skinwalkers resemble humans much of the time, but they have the uncanny ability to transform into bestial humanoids with powerful and fearsome aspects of animals.
Pathfinder Roleplaying Game Bestiary 5 © 2015, Paizo Inc.; Authors: Dennis Baker, Jesse Benner, John Bennett, Logan Bonner, Creighton Broadhurst, Robert Brookes, Benjamin Bruck, Jason Bulmahn, Adam Daigle, Thurston Hillman, Eric Hindley, Joe Homes, James Jacobs, Amanda Hamon Kunz, Ben McFarland, Jason Nelson, Thom Phillips, Stephen Radney-MacFarland, Alistair Rigg, Alex Riggs, David N. Ross, Wes Schneider, David Schwartz, Mark Seifter, Mike Shel, James L. Sutter, and Linda Zayas-Palmer.