Learn about the diversity of life that can be found in your backyard, country and around the world.
The Wildlife Library also helps you learn how to identify each of the species, so that you can submit sightings to Wildlife Watch.
You can also learn about the different natural and human-caused threats that are endangering many species of wildlife.
American Alligator | Alligator Snapping Turtle | Arboreal Salamander | Black Rat Snake | Brook Trout | Bull Shark | California Red-legged Frog | Cheat Mountain Salamander | Chinook Salmon | Eastern Box Turtle | Eastern Fence Lizard | Flying Fish | Hellbender | Louisiana Pine Snake | Mangrove Rivulus | Mudminnow | Northern Water Snake | Puerto Rican Boa | Puerto Rican Coqui | Pupfish | Rainbow Trout or Steelhead | Rattlesnakes | Sawfish | Sea Turtles | Southern Cricket Frog | Spotted Salamander | Spring Peeper | Texas Blind Salamander | Tiger Salamander | Toads | Tree Frogs | Walleye | Wood Frog
American Dipper | American Robin | Arctic Tern | Bald Eagle | Baltimore Oriole | Black-capped Chickadee | Brown-headed Nuthatch | Brown Pelican | Burrowing Owl | Cedar Waxwing | Common Loon | Eastern Towhee | Great Horned Owl | Greater Roadrunner | Mallard | Northern Mockingbird | Northern Spotted Owl | Osprey | Peregrine Falcon | Pintail | Red-bellied Woodpecker | Red-cockaded Woodpecker | Red Knot | Ruby-throated Hummingbird | Sandhill Crane | Western Scrub-jay | Whooping Crane | Wood Duck | Yellow-headed Blackbird
Ant | Atlantic White Shrimp | Blue Crab | Bombadier Beetle | Cecropia Moth | Common Eastern Bumble Bee | Common House Spider | Earthworm | Firefly | Garden Spider | Giant Darner Dragonfly | Horseshoe Crab | Kāhuli Tree Snail | Mayfly | Millipedes | Monarch Butterfly | Periodical Cicadas | Rhinoceros Beetles | Sea Cucumber | Tan Jumping Spider | Tarantula | Termites | Vernal Pool Fairy Shrimp | Walking Stick | Water Strider | Yucca Moth
American Beaver | American Pika | Bats | Bighorn Sheep | Bison | Black Bear | Black-tailed Prairie Dog | Blue Whale | Canada Lynx | Dusky-footed Woodrat | Florida Panther | Flying Squirrel | Gray Wolf | Grizzly Bear | Harbor Porpoise | Hawaiian Monk Seal | Humpback Whale | Key Deer | Mole | Moose | Mule Deer | Nine-banded Armadillo | North American River Otter | Orca | Pocket Gophers | Polar Bear | Pronghorn | Raccoon | Red Fox | Red Squirrel | Red Tree Vole | Red Wolf | Snowshoe Hare | Sperm Whale | Spinner Dolphin | Swamp Rabbit | West Indian Manatee | Wolverine
Bald Cypress | Cacti | California Bay Laurel | Douglas Fir | Fremont Cottonwood | Great Basin Bristlecone Pine | Joshua Tree | Longleaf Pine | Quaking Aspen | Red Mangrove | Red Maple | Resurrection Fern | Seagrasses | Shagbark Hickory | Skunk Cabbage | Southern Live Oak | Sundews | Truffles | Venus Flytrap | Wild Rice
Take action to keep the Centennial Mountains a key habitat for bighorn sheep. >>