The Animals
A list of animals that are needed for this trophy (including their number in the compendium):
001. American Alligator
002. American Alligator (small)
003. Nine-Banded Armadillo
004. American Badger
006. American Black Bear
007. Grizzly Bear
008. North American Beaver
010. Wild Boar
011. Whitetail Buck
012. Whitetail Deer
013. American Bison
027. Greater Prairie Chicken
030. Cougar
034. California Valley Coyote
053. Mallard Duck
054. Pekin Duck
057. Reddish Egret
058. Little Egret
059. Snowy Egret
060. Rocky Mountain Bull Elk
061. Rocky Mountain Cow Elk
062. American Red Fox
063. American Gray Fox
064. Silver Fox
065. Banded Gila Monster
067. Canada Goose
071. Great Blue Heron
072. Tricolored Heron
073. Desert Iguana
074. Green Iguana
075. Collared Peccary
076. Common Loon
077. Pacific Loon
078. Yellow-billed Loon
079. Western Bull Moose
080. Western Moose
082. American Muskrat
090. Panther
091. Florida Panther
098. Ring-necked Pheasant
099. Chinese ring-necked Pheasant
105. Virginia Possum
106. American Pronghorn Buck
107. American Pronghorn Doe
108. Sonoran Pronghorn Buck
109. Sonoran Pronghorn Doe
110. Baja California Pronghorn Buck
111. Baja California Pronghorn Doe
113. Sierra Nevada Bighorn Ram
114. Sierra Nevada Bighorn Sheep
115. Desert Bighorn Ram
116. Desert Bighorn Sheep
117. Rocky Mountain Bighorn Ram
118. Rocky Mountain Bighorn Sheep
119. Black-tailed Jackrabbit
120. North American Raccoon
126. Roseate Spoonbill
131. Striped Skunk
135. Diamondback Rattlesnake
137. Black-tailed Rattlesnake
138. Timber Rattlesnake
139. Northern Copperhead Snake
140. Southern Copperhead Snake
141. Midland Water Snake
142. Cottonmouth Snake
143. Northern Water Snake
154. Eastern Wild Turkey
155. Rio Grande Wild Turkey
156. Alligator Snapping Turtle
159. Gray Wolf
160. Timber Wolf
Hints & Tips
AUTO AIM
First things first, head in to your settings and set auto-aim to wide and auto aim lock-on to max. This will mean that in some cases even if you can't see the animal, you may be able to lock on to it anyway. In all cases, make sure you turn on dead-eye and mark the animal before shooting.
EAGLE VISION
Click L3 and R3 together to activate Eagle Vision, allowing you to see animals and their tracks. You are taught how to use this as part of one the first missions in the game and you will need it. A lot.
COVER YOUR STINK
When hunting, ALWAYS use Cover Scent Lotion - it will allow you get closer to animals without them running away. Your character gets very stinky very quickly, so unless you fancy taking a bath every 10-15 minutes this is your best option.
PREDATORS
Panthers, Cougars and Wolves will attack on site, so be prepared. When in an area with these predators, keep one eye on the minimap at all times. As soon as you see a red dot, mash the O button which will cause the animal to be batted away, giving you more time to kill it.
You can try to use Cover Scent Lotion and Predator Bait (for Panthers you need Potent Predator Bait) to lure them to a specific spot, however this only works sporadically in my experience, and on most occasions they will still attack you, ignoring the bait.
SNAKES!
The easiest method of finding a snake is to ride around the are on your horse until a red dot appears on the map - this means that a snake has tried to attack you. Loop back quickly and you should be able to find it in the area where the dot appeared.
IF AT FIRST...
For everything on this list, you can use the 'reload' trick (Save Game > Exit Game > Reload), this will respawn all the wildlife in the area. This is also how you can get 3-star pelts easier, as you can reload the same animal until it is a 3-star.
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If you think anything needs adding, please let me know in the comments - and if you're having trouble getting a specific animal, please post in the comments and myself and others can try to point you in the right direction :)