California Red-sided Garter Snake
Thamnophis sirtalis infernalis
Ellis Creek Water Recycling Facility, Petaluma, Sonoma County 12 September 2009
Ellis Creek Water Recycling Facility, Petaluma, Sonoma County 12 September 2009
Ellis Creek Water Recycling Facility, Petaluma, Sonoma County 12 September 2009
Identification based on presence of red markings between stripes, seven upper labials, dark wedges on upper labials, large eyes.
This is a subspecies of Common Garter Snake.