California Slender Salamander (Batrachoseps attenuatus) or hlkerrwers (salamander) in the Yurok language.
This is a type of lungless salamander primarily found in Northern California.
These salamanders are active on the ground during wet weather, and at this time they can be found under logs and in other damp environments. They retreat underground in hot or dry weather.
When feeling threatened, they may coil up into a tight spiral or detach their tails, which will regrow within 1-3 years.
Batrachoseps attenuates (Amphibiaweb.org) and California slender salamander (Wikipedia)
Photos: Marshall Hedin and Greg Schechter on Flickr