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Denver-Boulder Metro Area: Wildlife

This guide contains mammals, reptiles, amphibians, fish, and mollusks that can be found in the Denver-Boulder Metro Area, including Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas, and Jefferson Counties.

Lined Snake 1
Tropidoclonion lineatum
Western Terrestrial Garter Snake 2
Thamnophis elegans
Wandering Garter Snake 3
Thamnophis elegans vagrans
Plains Garter Snake 4
Thamnophis radix
Common Garter Snake 5
Thamnophis sirtalis
Red-sided Garter Snake 6
Thamnophis sirtalis parietalis
Northern Watersnake 7
Nerodia sipedon

Edited by Colorado Parks and Wildlife, some rights reserved (CC BY-SA)

Photo Credits

  • 1. (c) Mike Keeling, some rights reserved (CC BY-ND)
  • 2. (c) J. N. Stuart, some rights reserved (CC BY-NC-ND)
  • 3. (c) johnwilliams, some rights reserved (CC BY-NC), uploaded by johnwilliams
  • 4. (c) Jeff Skrentny, some rights reserved (CC BY-NC), uploaded by Jeff Skrentny
  • 5. (c) Mark Kluge, some rights reserved (CC BY-NC-ND), uploaded by Mark Kluge
  • 6. (c) Jake Scott, some rights reserved (CC BY-NC), uploaded by Jake Scott
  • 7. (c) Douglas Mills, some rights reserved (CC BY-NC-ND)

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