• Nebraska:
  
• Eastern chipmunk (Tamias striatus)
• Woodchuck (Marmota monax)
• Franklin's ground squirrel (Spermophilus franklinii)
• Spotted ground squirrel (Spermophilus spilsoma)
• 13-lined ground squirrel (Spermophilus tridecemlineatus)
• Black-tailed prairie dog (Cynomys ludovicianus)
• Eastern gray squirrel (Sciurus carolinensis)
• Fox squirrel (Sciurus niger)
• Southern flying squirrel (Glaucomys volans)
• Nevada:
  
• Cliff chipmunk (Tamias dorsalis)
• Least chipmunk (Tamias minimus)
• Palmer's chipmunk (Tamias palmeri)
• Panamint chipmunk (Tamias panamintinus)
• Allen's chipmunk (Tamias senex)
• Uinta chipmunk (Tamias umbrinus)
• Yellow-bellied marmot (Marmota flaviventris)
• White-tailed antelope squirrel (Ammospermophilus leucurus)
• California ground squirrel (Spermophilus beecheyi)
• Belding's ground squirrel (Spermophilus beldingi)
• Wyoming ground squirrel (Spermophilus elegans)
• Golden-mantled ground squirrel (Spermophilus lateralis)
• Round-tailed ground squirrel (Spermophilus tereticaudatus)
• Townsend's ground squirrel (Spermophilus toundsendii)
• Rock squirrel (Spermophilus variegatus)
• Red squirrel (Tamiasciurus hudsonicus)
• Northern flying squirrel (Glaucomys sabrinus)
• New Hampshire:
  
• Eastern chipmunk (Tamias striatus)
• Woodchuck (Marmota monax)
• Eastern gray squirrel (Sciurus carolinensis)
• Red squirrel (Tamiasciurus hudsonicus)
• Northern flying squirrel (Glaucomys sabrinus)
• Southern flying squirrel (Glaucomys volans)
• New Jersey:
  
• Eastern chipmunk (Tamias striatus)
• Woodchuck (Marmota monax)
• Eastern gray squirrel (Sciurus carolinensis)
• Red squirrel (Tamiasciurus hudsonicus)
• Southern flying squirrel (Glaucomys volans)
• New Mexico:
  
• Gray-footed chipmunk (Tamias canipes) - Male is smaller than female!
• Gray-collared chipmunk (Tamias cinereicollis)
• Cliff chipmunk (Tamias dorsalis)
• Least chipmu nk (Tamias minimus)
• Colorado chipmunk (Tamias quadrivittatus)
• Yellow-bellied marmot (Marmota flaviventris)
• Harris' Antelope squirrel (Ammospermophilus harrisii)
• Texas Antelope squirrel (Ammospermophilus interpres)
• White-tailed antelope squirrel (Ammospermophilus leucurus)
• Golden-mantled ground squirrel (Spermophilus lateralis)
• Mexican ground squirrel (Spermophilus mexicanis)
• Spotted ground squirrel (Spermophilus spilsoma)
• 13-lined ground squirrel (Spermophilus tridecemlineatus)
• Rock squirrel (Spermophilus variegatus)
• Gunnison's prairie dog (Cynomys gunnisoni)
• Black-tailed prairie dog (Cynomys ludovicianus)
• Tassel-eared squirrel (Sciurus aberti)
• Red squirrel (Tamiasciurus hudsonicus)
• New York:
  
• Eastern chipmunk (Tamias striatus)
• Woodchuck (Marmota monax)
• Eastern gray squirrel (Sciurus carolinensis)
• Red squirrel (Tamiasciurus hudsonicus)
• Northern flying squirrel (Glaucomys sabrinus)
• Southern flying squirrel (Glaucomys volans)
• North Carolina:
  
• Eastern chipmunk (Tamias striatus)
• Woodchuck (Marmota monax)
• Eastern gray squirrel (Sciurus carolinensis)
• Eastern fox squirrel (Sciurus niger)
• Red squirrel (Tamiasciurus hudsonicus)
• Northern flying squirrel (Glaucomys sabrinus)
• Southern flying squirrel (Glaucomys volans)
• Brevard White squirrel (possibly Callosciurus finlaysoni)
• North Dakota:
  
• Least chipmunk (Tamias minimus)
• Eastern chipmunk (Tamias striatus)
• Franklin's ground squirrel (Spermophilus franklinii)
• Richardson's ground squirrel (Spermophilus richardsonii)
• 13-lined ground squirrel (Spermophilus tridecemlineatus)
• Black-tailed prairie dog (Cynomys ludovicianus)
• Eastern gray squirrel (Sciurus carolinensis)
• Fox squirrel (Sciurus niger)
• Red squirrel (Tamiasciurus hudsonicus)
• Northern flying squirrel (Glaucomys sabrinus)
• Ohio:
  
• Eastern chipmunk (Tamias striatus)
• Woodchuck (Marmota monax)
• 13-lined ground squirrel (Spermophilus tridecemlineatus)
• Eastern gray squirrel (Sciurus carolinensis)
• Fox squirrel (Sciurus niger)
• Red squirrel (Tamiasciurus hudsonicus)
• Southern flying squirrel (Glaucomys volans)
• Oklahoma:
  
• Eastern chipmunk (Tamias striatus)
• Spotted ground squirrel (Spermophilus spilsoma)
• 13-lined ground squirrel (Spermophilus tridecemlineatus)
• Rock squirrel (Spermophilus variegarus)
• Black-tailed prairie dog (Cynomys ludovicianus)
• Eastern gray squirrel (Sciurus carolinensis)
• Fox squirrel (Sciurus niger)
• Southern flying squirrel (Glaucomys volans)
• Oregon:
  
• Yellow-pine chipmunk (Tamias amoenus)
• Least chipmunk (Tamias minimus)
• Allen's chipmunk (Tamias senex)
• Siskiyou chipmunk (Tamias siskiyou)
• Townsend's chipmunk (Tamias townsendii)
• Yellow-bellied marmot (Marmota flaviventris)
• White-tailed antelope squirrel (Ammospermophilus leucurus)
• California ground squirrel (Spermophilus beecheyi)
• Belding's ground squirrel (Spermophilus beldingi)
• Columbian ground squirrel (Spermophilus columbianus)
• Wyoming ground squirrel (Spermophilus elegans)
• Golden-mantled ground squirrel (Spermophilus lateralis)
• Townsend's ground squirrel (Spermophilus townsendii)
• Washington ground squirrel (Spermophilus washingtoni)
• Eastern gray squirrel (Sciurus carolinensis)*
• Western gray squirrel (Sciurus griseus)
• Eastern fox squirrel (Sciurus niger)*
• Douglas squirrel (Tamiasciurus douglasii)
• Red squirrel (Tamiasciurus hudsonicus)
• Northern flying squirrel (Glaucomys sabrinus)
• Pennsylvania:
  
• Eastern chipmunk (Tamias striatus)
• Woodchuck (Marmota monax)
• Eastern Gray squirrel (Sciurus carolinensis)
• Fox squirrel (Sciurus niger)
• Red squirrel (Tamiasciurus hudsonicus)
• Southern flying squirrel (Glaucomys volans)
• Northern flying squirrel (Glaucomys sabrinus)
• Rhode Island:
  
• Eastern chipmunk (Tamias striatus)
• Woodchuck (Marmota monax)
• Eastern gray squirrel (Sciurus carolinensis)
• Red squirrel (Tamiasciurus hudsonicus)
• Southern flying squirrel (Glaucomys volans)
• Northern flying squirrel (Glaucomys sabrinus)
• South Carolina:
  
• Eastern chipmunk (Tamias striatus)
• Eastern gray squirrel (Sciurus carolinensis)
• Fox squirrel (Sciurus niger)
• Southern flying squirrel (Glaucomys volans)
• South Dakota:
  
• Eastern chipmunk (Tamias striatus)
• Franklin's ground squirrel (Spermophilus franklinii)
• Richardson's ground squirrel (Spermophilus richardsonii)
• Spotted ground squirrel (Spermophilus spilsoma)
• 13-lined ground squirrel (Spermophilus tridecemlineatus)
• Black-tailed prairie dog (Cynomys ludovicianus)
• Fox squirrel (Sciurus niger)
• Tennessee:
  
• Eastern chipmunk (Tamias striatus)
• Woodchuck (Marmota monax)
• Eastern gray squirrel (Sciurus carolinensis)
• Fox squirrel (Sciurus niger)
• Red squirrel (Tamiasciurus hudsonicus)
• Northern flying squirrel (Glaucomys sabrinus)
• Southern flying squirrel (Glaucomys volans)
• Texas:
  
• Gray-footed chipmunk (Tamias canipes)
• Eastern chipmunk (Tamias striatus)
• Texas antelope squirrel (Ammospermophilus interpres)
• Mexican ground squirrel (Spermophilus mexicanus)
• Spotted ground squirrel (Spermophilus spilsoma)
• 13-lined ground squirrel (Spermophilus tridecemlineatus)
• Rock squirrel (Spermophilus variegatus)
• Black-tailed prairie dog (Cynomys ludovicianus)
• Eastern gray squirrel (Sciurus carolinensis)
• Fox squirrel (Sciurus niger)
• Southern flying squirrel (Glaucomys volans)
• Utah:
  
• Cliff chipmunk (Tamias dorsalis)
• Least chipmunk (Tamias minimus)
• Colorado chipmunk (Tamias quadrivittatus)
• Hopi chipmunk (Tamias rufus)
• Uinta chipmunk (Tamias umbrinus)
• Yellow-bellied marmot (Marmota flaviventris)
• White-tailed Antelope squirrel (Ammospermophilus leucurus)
• Uinta ground squirrel (Spermophilus armatus)
• Belding's ground squirrel (Spermophilus beldingi)
• Wyoming ground squirrel (Spermophilus elegans)
• Golden-mantled ground squirrel (Spermophilus lateralis)
• Spotted ground squirrel (Spermophilus spilsoma)
• Townsend's ground squirrel (Spermophilus townsendii)
• 13-lined ground squirrel (Spermophilus tridecemlineatus)
• Rock squirrel (Spermophilus variegatus)
• Gunnison's prairie dog (Cynomys gunnisoni)
• White-tailed prairie dog (Cynomys leucurus)
• Utah prairie dog (Cynomys parvidens)
• Tassel-eared squirrel (Sciurus aberti)
• Red squirrel (Tamiasciurus hudsonicus)
• Northern flying squirrel (Glaucomys sabrinus)
• Vermont:
  
• Eastern chipmunk (Tamias striatus)
• Woodchuck (Marmota monax)
• Eastern gray squirrel (Sciurus carolinensis)
• Red squirrel (Tamiasciurus hudsonicus)
• Northern flying squirrel (Glaucomys sabrinus)
• Southern flying squirrel (Glaucomys volans)
• Virginia:
  
• Eastern chipmunk (Tamias striatus)
• Woodchuck (Marmota monax)
• Eastern gray squirrel (Sciurus carolinensis)
• Eastern fox squirrel (Sciurus niger)
• Red squirrel (Tamiasciurus hudsonicus)
• Northern flying squirrel (Glaucomys sabrinus)
• Southern flying squirrel (Glaucomys volans)
• Washington:
  
• Yellow-pine chipmunk (Tamias amoenus)
• Least chipmunk (Tamias minimus)
• Red-tailed chipmunk (Tamias ruficaudatus)
• Towndsend's chipmunk (Tamias townsendi)
• Hoary Marmot (Marmota caligata)
• Yellow-bellied marmot (Marmota flaviventris)
• Olympic marmot (Marmota olympus)
• California ground squirrel (Spermophilus beecheyi)
• Columbian ground squirrel (Spermophilus columbianus)
• Golden-mantled ground squirrel (Spermophilus lateralis)
• Cascade mantled ground squirrel (Spermophilus saturatus)
• Townsend's ground squirrel (Spermophilus townsendii)
• Washington ground squirrel (Spermophilus washingtonii)
• Eastern Gray squirrel (Sciurus carolinensis)*
• Eastern Fox squirrel (Sciurus niger)*
• Western Gray squirrel (Sciurus griseus)
• Douglas squirrel (Tamiasciurus douglasii)
• Red squirrel (Tamiasciurus hudsonicus)
• Northern flying squirrel (Glaucomys sabrinus)
• West Virginia:
  
• Eastern chipmunk (Tamias striatus)
• Woodchuck (Marmota monax)
• Eastern Gray squirrel (Sciurus carolinensis)
• Fox squirrel (Sciurus niger)
• Red squirrel (Tamiasciurus hudsonicus)
• Southern flying squirrel (Glaucomys volans)
• Northern flying squirrel (Glaucomys sabrinus)
• Wisconsin:
  
• Least Chipmunk (Tamias minimus)
• Eastern Chipmunk (Tamias striatus)
• Woodchuck (Marmota monax)
• Franklin's ground squirrel (Spermophilus franklinii)
• 13-lined ground squirrel (Spermophilus tridecemlineatus)
• Eastern gray squirrel (Sciurus carolinensis)
• Eastern fox squirrel (Sciurus niger)
• Red squirrel (Tamiasciurus hudsonicus)
• Northern flying squirrel (Glaucomys sabrinus)
• Southern flying squirrel (Glaucomys volans)
• Wyoming:
  
• Yellow-pine chipmunk (Tamias amoenus)
• Least Chipmunk (Tamias minimus)
• Uinta chipmunk (Tamias umbrinus)
• Yellow-bellied marmot (Marmota flaviventris)
• Wyoming ground squirrel (Spermophilus elegans)
• Uinta ground squirrel (Spermophilus armatus)
• Golden-mantled ground squirrel (Spermophilus lateralis)
• 13-lined ground squirrel (Spermophilus tridecemlineatus)
• White-tailed prairie dog (Cynomys leucurus)
• Black-tailed prairie dog (Cynomys ludovicianus)
• Red squirrel (Tamiasciurus hudsonicus)

*Introduced species

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