ID Family Species Regions Found Abundance Habitat Communities 1 Marsupials Virginia Opossum All but NW, SC rare RI, WL, AG, SF 2 Shrews and Moles Masked Shrew All common FO, SH, RI, PR, WL,SF,ME 3 Hayden's Shrew NC, NE rare FO, RI, WL, ME 4 Pygmy Shrew SC rare FO, PR, WL, ME 5 Merriam's Shrew All but NW rare SH, PR, SF 6 Dusky Shrew All uncommon FO, SHE, RI, PR, SF, ME 7 Dwarf Shrew All but NC, NE rare FO, SH, SF, ME 8 Water Shrew All but NE common FO, RI, WL, ME 9 Preble's Shrew NW rare FO, RI, ME 10 Vagrant Shrew All rare FO, SH, RI, PR, SF, ME 11 Eastern Mole NC, SE peripheral, undetermined PR, AG, SF 12 Bats California Myotis NC, SW peripheral, undetermined FO,SH,PR,SF 13 Western Small-footed Myotis All uncommon FO, SH, PR, SF 14 Long-eared Myotis All uncommon FO, SH, RI, PR 15 Northern Myotis NE, NE, SE rare,peripheral FO, SF 16 Little Brown Myotis All common FO, RI, PR, FS 17 Fringed Myotis NE, SC, SE rare FO, FH, SF 18 Long-legged Myotis All undetermined FO, FH, RI, FS 19 Yuma Myotis NC undetermined SH, RI, PR, FS 20 Red Bat All but NW, NE rare SH, PR, AG, RI 21 Hoary Bat All rare FO, SH, RI, SF, PR 22 Silver-haired Bat All uncommon FO 23 Big Brown Bat All common FO, SH, PR, SF 24 Spotted Bat NC rare SH, PR, FS 25 Townsend's Big-eared Bat All uncommon FO, SH, PR, RI, SF 26 Pallid Bat All but NW, NE rare SH, SF, RI, PR 27 Brazilian Free-tailed Bat SE periphal, undetermined FO, SH, RI, SF 28 Pikas & Cottontails Pika All but NE common FO,SF,ME 29 Pygmy Rabbit SW rare SH 30 Desert Cottontail All common FO, SH, PR, RI 31 Eastern Cottontail SE uncommon PR, RI 32 Mountain (Nuttall's) Cottontail All common FO, SH 33 Hares Snowshoe Hare All but NE common FO, RI 34 Black-tailed Jackrabbit All but NW common SH, PR, AG, SF, ME 35 White-tailed Jackrabbit All common FO, SH, PR, ME 36 Chipmunks Yellow-pine Chipmunk All but NE uncommon FO, SH, RI, PR 37 Cliff Chipmunk SW, SC, SE rare, peripheral FO, SH, SF 38 Least Chipmunk All abundant FO, SH, RI, PR, ME,SF 39 Uinta Chipmunk All but NE uncommon FO, SH, ME, SF 40 Marmots, Ground Squirrels, Prairie Dogs Yellow-bellied Marmot All common FO, SH, RI, PR, SF 41 Uinta Ground Squirrel All but NE uncommon FO, PR, AG, RI, ME 42 Wyoming Ground Squirrel All but NE common All but WL 43 Golden-mantled Ground Squirrel All but NC, NE common FO, SH, RI, PR, WL, SF 44 Spotted Ground Squirrel SC, SE rare, peripheral SH, PR 45 Thirteen-lined Ground Squirrel All but NW common SH, PR, AG 46 White-tailed Prairie Dog All common SH, PR 47 Black-tailed Prairie Dog All but SW common PR 48 Tree Squirrels Albert's Squirrel SE rare, peripheral FO 49 Fox Squirrel All common FO, SH, RI, AG, SF 50 Red Squirrel All common FO 51 Northern Flying Squirrel All but SC uncommon FO 52 Pocket Gophers Wyoming Pocket Gopher SC uncommon FH, FS 53 Idaho Pocket Gopher SW uncommon FH, PR, ME, SF 54 Northern Pocket Gopher All common All but SF 55 Plains Pocket Gopher NE, SE uncommon SH, PR, AG 56 Pocket Mice Olive-backed Pocket Mouse All common SH, PR 57 Plains Pocket Mouse SC, SE rare, peripheral SH, PR, FS 58 Silky Pocket Mouse All but NW, NC rare, peripheral SH, PR 59 Great Basin Pocket Mouse SW, SC rare, peripheral SH, PR 60 Hispid Pocket Mouse NE, SE rare, peripheral SH, PR 61 Kangaroo Rats Ord's Kangaroo Rat All but NW common SH, PR, SF 62 Beaver Beaver All common RI, WL 63 Small Mice Western Harvest Mouse All common SH, RI, PR 64 Plains Harvest Mouse NE, SE rare, peripheral PR, SF 65 Canyon Mouse SW rare, peripheral FO, SF 66 White-footed Mouse All but NW, SW rare FO, RI, PR 67 Deer Mouse All abundant All 68 Pinyon Mouse SW, SC rare, peripheral FO, SH, FS 69 Northern Grasshopper Mouse All common SH, PR, AG 70 Wood Rats Bushy-tailed Wood Rat All common SF 71 Voles Southern Red-backed Vole All common FO, RI, ME 72 Heather Vole All but NE common FO, SH, RI, ME, SF 73 Long-tailed Vole All common All but AG, AF 74 Montane Vole All common All but AG 75 Prairie Vole All but NW, SW common SH, PR, AG 76 Meadow Vole All common FO, SH, RI, PR, SF, ME 77 Water Vole All but SE rare RI, ME 78 Sagebrush Vole All common SH, PR, AG 79 Semi-Aquatic Mammals Muskrat All common WL 80 Domestic Rats Norway Rat All but NW, SW uncommon AG, SF 81 Other Mice House Mouse All but NW common AG, SF 82 Meadow Jumping Mouse NC, NE, SE rare WL, SH, RI, ME 83 Western Jumping Mouse All uncommon FO, RI, WL, ME 84 Porcupines Porcupine All common FO, SH, RI, PR 85 Dog-Like Mammals Coyote All common FO, SH, RI, PR, AG 86 Gray Wolf NW undetermined FO, SH, ME 87 Swift Fox All but NW, SW rare PR, AG, SF 88 Red Fox All common SH, RI, PR, AG, ME 89 Gray Fox All but NW, SW rare FO, SH, RI, PR, AG, SF 90 Bears Black Bear All but NC, NE common FO, RI, ME 91 Grizzly Bear NW, SW rare FO, SH, RI, ME 92 Ringtail & Raccoon Ringtail SW, SC, SE rare, peripheral FO, SH, RI, SF 93 Racoon All common All 94 Weasel-like Mammals Marten All but NE uncommon FO, RI 95 Fisher NW, NC, SC rare FO, RI 96 Ermine All uncommon FO, RI, WL, ME 97 Long-tailed Weasel All common SH, RI, PR, AG, SF, ME 98 Black-footed Ferret SC rare SH, PR 99 Least Weasel NW, NC, NE rare SH, ME, RI 100 Mink All common All 101 Wolverine All but NE, SE rare FO 102 Badger All common SH, PR, AG, ME 103 Western Spotted Skunk All but NE uncommon RI, SH, PR, SF 104 Eastern Spotted Skunk All but NW, SW uncommon FO, AG, SF, RI 105 Striped Skunk All common All but WL 106 River Otter All but NE uncommon FO,RI, WL, ME 107 Cats Mountain Lion All uncommon FO, SH, SF, ME 108 Lynx NW, NC, SW rare FO 109 Bobcat All common FO, SH, PR, SF, ME 110 Antlered Mammals Elk All common FO, SH, PR, AG 111 Mule Deer All common All but WL, SF 112 White-tailed Deer All common FO, SH, AG, RI, ME 113 Moose All but NE common FO, SH, RI, AG, ME 114 Horned Mammals Pronghorn Antelope All common SH, PR 115 Bison NW, NC common SH, PR, ME 116 Mountain Goat NW rare FO, SH, SF, ME 117 Big Horn Sheep All uncommon FO, SH, SF, ME