Mammals

• American Pika
• Badger
• Bats
• Beaver
• Bighorn Sheep
• Bison 
• Black Bear
• Black-footed Ferret
• Black-tailed Prairie Dog
• Bobcat
• Chipmunks
• Cottontails
• Coyote
• Deer
• Eastern Mole 
• Elk 
• Foxes 
• Gray Wolf
• Grizzly Bear
• Ground Squirrels
• Hares
• Harvest Mice
• Hispid Cotton Rat 
• Jumping Mice 
• Kit Fox
• Lynx   
• Marten 
• Mink
• Moose
• Mountain Goat 
• Mountain Lion
• Muskrat
• Nine-Banded Armadillo
• Northern Grasshopper Mouse 
• Ord's Kangaroo Rat 
• Pocket Gophers 
• Pocket Mice 
• Porcupine
• Prairie Dogs 
• Pronghorn
• Raccoon
• Ringtail
• River Otter
• Shrews  
• Skunk
• Tree Squirrels
• Virginia Opossum
• Voles/Meadow Mice 
• Weasels
• White-Footed Mice 
• Wolverine
• Woodrats 
• Yellow-Bellied Marmot
  
  
  
• What is a Mammal?
• Accidental Introduced Species
• Checklist of Colorado Mammals
• Learn More About Mammals
• Mammal Management

 Birds

• Bald Eagle
• Band-tailed Pigeon
• Black-billed Cuckoo
• Black-capped Chickadee
• Brown Creeper
• Burrowing Owl
• Canada Goose
• Chukar
• Columbian Sharp-tailed Grouse (Mountain)
• Cormorant
• Cow Bird
• Crow
• Dusky Grouse 
• Eastern Bluebird 
• Golden Eagle  
• Gray Catbird
• Great Horned Owl
• Greater Prairie-Chicken
• Greater Sage-grouse
• Gunnison Sage-grouse
• Least Tern
• Lesser Prairie-Chicken
• Mountain Bluebird 
• Mountain Chickadee
• Mountain Plover
• Mourning Dove
• Peregrine Falcon
• Piping Plover
• Plains Sharp-tailed Grouse
• Sandhill Crane
• Western Bluebird 
• Whooping Crane
• Yellow-breasted Chat

 Fish

• Arkansas Darter
• Bonytail
• Colorado River Cutthroat Trout
• Greenback Cutthroat Trout 
• Humpback Chub
• Mountain Whitefish 
• Pikeminnow
• Razorback Sucker
• Rio Grande Cutthroat Trout

 Reptiles/Amphibians

• Boreal Toad
• Painted Turtle 
• Herpetofaunal Atlas Web Site

Mollusks/Crustaceans

• Aquatic Mollusks
• Terrestrial Mollusks
• Native Crustaceans

 Invasive Species

• New Zealand Mudsnail
• Rusty Crayfish
• Zebra and Quagga Mussels