Mammals:
* Large Mammals: Deer, elk, moose, bears (black bears, brown bears), wolves, coyotes, bobcats, mountain lions, wild pigs, bison (in some areas)
* Small Mammals: Squirrels, rabbits, chipmunks, mice, voles, shrews, opossums, raccoons, skunks, weasels, badgers, beavers, porcupines
Birds:
* Songbirds: Robins, blue jays, cardinals, woodpeckers, warblers, sparrows, owls, hawks, eagles
* Other Birds: Grouse, turkeys, ducks, geese, woodcocks, hummingbirds
Reptiles:
* Snakes: Garter snakes, rattlesnakes, copperheads, water snakes
* Lizards: Lizards, skinks, geckos, chameleons (in tropical areas)
* Turtles: Box turtles, snapping turtles, painted turtles
Amphibians:
* Frogs: Tree frogs, bullfrogs, green frogs, toads
* Salamanders: Newts, mudpuppies
Insects:
* Ants, bees, wasps, butterflies, moths, beetles, flies, spiders, grasshoppers, crickets, caterpillars
Fish:
* In streams and rivers: Trout, bass, catfish, perch
Other:
* Snails, slugs, earthworms, millipedes, centipedes, spiders
Specific Examples:
* Temperate Deciduous Forest: Deer, squirrels, rabbits, raccoons, woodpeckers, robins, snakes, frogs
* Tropical Rainforest: Monkeys, jaguars, sloths, macaws, toucans, snakes, frogs, insects
* Boreal Forest (Taiga): Moose, wolves, lynx, wolverines, snowshoe hares, owls, grouse
This is just a brief overview. To get a more specific list of animals that live in a particular forest, you can search for information online about that specific forest or location.