YellowstoneNPS:
Terrestrial gartersnake
YellowstoneNPS:
Terrestrial gartersnake on a path in Upper Geyser Basin
YellowstoneNPS:
Bull snake in Mammoth Hot Springs
YellowstoneNPS:
Bull snake in Mammoth Hot Springs (2)
YellowstoneNPS:
Bull snake in Mammoth Hot Springs (3)
YellowstoneNPS:
Prairie rattlesnake (Crotalus viridis)
YellowstoneNPS:
Prairie rattlesnake (Crotalus viridis) (2)
YellowstoneNPS:
Wandering garter snake (Thamnophis elegans vagrans)
YellowstoneNPS:
Snake skin after molting, about 6 feet
YellowstoneNPS:
Wandering garter snake
YellowstoneNPS:
Rubber boa on the Yellowstone River Trail
YellowstoneNPS:
Rubber boa on the Yellowstone River Trail (2)
YellowstoneNPS:
Bull snake along the Gardner River