Was bored and thought I'd help out by providing a list of animals indigenous to North America that fit the categories for people considering playing Skinwalker* but have no clue as to what animal to choose. As such this is by no means a 100% complete list, but it's about everything I could possibly find.
Solo Hunter
High Beast
Bear (Grizzly, polar, black)
Gray Wolf
Jaguar
Cold Lord
Crocodile
Alligator
Chuckwalla
Shark (lots of varieties)
Squid
Boa Constrictor (as a non-venomous snake, this probably makes more sense as opposed to being a Deathstalker)
Orca
Pike
Barracuda
Giant Salamander
Alligator Snapping Turtle
Snakehead
Trout
Eel/ electric eel
Pack Hunter
Wolves
Dog
Coyote
Stealth Hunter
Shadow Stalker
Cougar (mountain lion, puma, panther)
Jaguar
Tarantula
Deathbringer
Spider
Wasp
Rattlesnake
Scorpion
Jellyfish (saying this may cause me to get Trouted, but I accept this fate)
Man 'o War (is not a Jellyfish)
Airborne^
Windlord
Eagle
Hawk
Falcon
Osprey (sea hawk)
Vulture/Petrel
Roadrunner (Geococcyx)
Nightwing
Owl
Bat
Opportunist
Wildfolk
Fox
Lynx
Raccoon
Otter
Badger
Beaver
Opossum
Porcupine
Vole
Scavengers
Rat
Catfish
Seagull (yeah, probably belongs in the Airborne category, but it also works here if you don't want to fly)
Vulture (same as seagull)
Opossum
*For costuming, Skinwalkers should check out the below site for some tasty construction stuff. The tutorial for making the wolf head is a great starting point to make those beautiful full-head transformations.
https://sites.google.com/site/gryphern/
^Crows and Ravens are not an option. Sorry guys. Jake says so.