Table of Contents
Acknowledgments ix
Author's Note xi
Introduction 1
Order Didelphimorphia American Marsupials: Pouched Mammals 10
Family DidelphidaeOpossums 11
Virginia Opossum 12
Order Soricomorpha Shrews and Moles: Insect-eaters 16
Family SoricidaeShrews 17
Masked Shrew 18
Pygmy Shrew 19
Merriam's Shrew 20
Montane Shrew 21
Dwarf Shrew 22
American Water Shrew 23
Elliot's Short-tailed Shrew 24
Least Shrew 25
Desert Shrew 26
Family TalpidaeMoles 27
Eastern Mole 28
Order Chiroptera Bats: Winged Mammals 32
Family VespertilionidaeEvening Bats 33
California Myotis 34
Western Small-footed Myotis 35
Long-eared Myotis 37
Little Brown Bat/Little Brown Myotis 38
Fringed Myotis 40
Long-legged Myotis 41
Yuma Myotis 43
Eastern Red Bat 44
Hoary Bat 46
Silver-haired Bat 47
Canyon Bat/Western Pipistrelle 50
Big Brown Bat 51
Spotted Bat 53
Townsend's Big-eared Bat 54
Pallid Bat 55
Family MolossidaeFree-tailed Bats 57
Brazilian Free-tailed Bat 58
Big Free-tailed Bat 60
Order Cingulata Armadillos: Armored Mammals 64
Family DasypodidaeArmadillos 65
Nine-banded Armadillo 66
Order Lagomorpha Rabbits and Relatives: Pikas, Rabbits, and Hares 70
Family OchotonidaePikas 71
American Pika 72
Family LeporidaeRabbits and Hares 73
Desert Cottontail 74
Eastern Cottontail 75
Mountain Cottontail/Nuttal's Cottontail 76
Snowshoe Hare 78
Black-tailed Japkrabbit 80
White-tailed Jackrabbit 81
Order Rodentia Rodents: Gnawing Mammals 86
Family SciuridaeSquirrels 87
Cliff Chipmunk 88
Least Chipmunk 89
Colorado Chipmunk 91
Hopi Chipmunk 93
Uinta Chipmunk 94
Yellow-bellied Marmot 95
White-tailed Antelope Squirrel 97
Wyoming Ground Squirrel 98
Golden-mantled Ground Squirrel 99
Spotted Ground Squirrel 101
Thirteen-lined Ground Squirrel 102
Rock Squirrel 103
Gunnison's Prairie Dog 105
White-tailed Prairie Dog 106
Black-tailed Prairie Dog 107
Abert's Squirrel 109
Fox Squirrel 111
Pine Squirrel (Chickaree) 112
Family GeomyidaePocket Gophers 115
Botta's Pocket Gopher 116
Northern Pocket Gopher 117
Plains Pocket Gopher 119
Yellow-faced Pocket Gopher 120
Family HeteromyidaePocket Mice and Kangaroo Rats 121
Olive-backed Pocket Mouse 122
Plains Pocket Mouse 123
Silky Pocket Mouse 124
Great Basin Pocket Mouse 125
Hispid Pocket Mouse 126
Ord's Kangaroo Rat 127
Family CastoriaeBeavers 129
American Beaver 130
Family CricetidaeNative Mice, Rats, and Voles 133
Western Harvest Mouse 134
Plains Harvest Mouse 135
Brush Mouse 136
Canyon Mouse 137
White-footed Mouse 138
Deer Mouse 139
Northern Rock Mouse 140
Pinon Mouse 141
Northern Grasshopper Mouse 142
Hispid Cotton Rat 143
White-throated Woodrat 144
Bushy-tailed Woodrat 145
Eastern Woodrat 147
Desert Woodrat 148
Mexican Woodrat 149
Southern Plains Woodrat 150
Southern Red-backed Vole 151
Western Heather Vole 152
Long-tailed Vole 153
Mexican Vole 154
Montane Vole 156
Prairie Vole 157
Meadow Vole 158
Sagebrush Vole 159
Muskrat 160
Family MuridaeOld World Mice and Rats 163
House Mouse 164
Norway Rat 165
Family DipodidaeJumping Mice and Jerboas 167
Meadow Jumping Mouse 168
Western Jumping Mouse 170
Family ErethizontidaeNew World Porcupines 171
North American Porcupine 172
Order Carnivora Carnivores: Meat Eaters 176
Family CanidaeDogs 177
Coyote 178
Gray Wolf 180
Kit Fox 182
Swift Fox 184
Red Fox 185
Gray Fox 186
Family UrsidaeBears .187
Black Bear 188
Grizzly Bear 190
Family ProcyonidaeRaccoons and Relatives 193
Ringtail 194
Raccoon 195
Family MustelidaeWeasels 197
Pine (American) Marten 198
Short-tailed Weasel (Ermine) 199
Long-tailed Weasel 200
Black-footed Ferret 202
Mink 204
Wolverine 205
American Badger 207
Northern River Otter 208
Family MephitidaeSkunks 211
Western Spotted Skunk 212
Eastern Spotted Skunk 213
Striped Skunk 214
Family FelidaeCats 217
Mountain Lion 218
Canada Lynx 220
Bobcat 222
Order Perissodactyla Odd-toed Hoofed Animals 226
Family EquidaeHorses 227
Wild Horse 228
Order Artiodactyla Even-toed Hoofed Animals: Deer, Pronghorn, Bison, Goats, and Sheep 232
Family CervidaeDeer 233
Elk 234
Mule Deer 236
White-tailed Deer 238
Moose 240
Family AntilocapridaePronghorn 243
Pronghorn 244
Family BovidaeCattle, Goats, and Sheep 247
Bison 248
Mountain Goat 250
Rocky Mountain Bighorn Sheep 251
Desert Bighorn Sheep 253
Where to See Colorado Mammals 255
Checklist of Colorado Mammals 256
Mammals with Limited Colorado Range 261
Whose Skull Is This? 262
Dental Formulas 263
Glossary 266
Other Resources 268
About the Author 269
Index 270