Sharp-tailed snake
- kingdom: Animalia
- phylum: Chordata
- class: Reptilia
- order: Squamata
- family: Dipsadidae
- genus: Contia
- species: Contia tenuis
Alameda- Albany
- Atherton
- Belmont
- Berkeley
- Berry Creek
- Bolinas
- Boyes Hot Springs
- Burbank
- Burlingame
- Carmel-by-the-Sea
- Castro Valley
- Cherryland
- Davis
- Del Monte Forest
- Downieville
- East Palo Alto
- El Sobrante
- Eldridge
- Fairfax
- Fetters Hot Springs-Agua Caliente
- Folsom
- Foothill Farms
- Fremont
- Fresno
- Georgetown
- Gold River
- Hayward
- Highlands-Baywood Park
- Hillsborough
- Ione
- Kensington
- Kentfield
- Ladera
- Lafayette
- Laytonville
- Livermore
- Los Gatos
- Lower Lake
- Lucas Valley-Marinwood
- Menlo Park
- Middletown
- Mill Valley
- Millbrae
- Moraga
- Napa
- Nevada City
- North Fair Oaks
- North Lakeport
- Orinda
- Oroville
- Oroville East
- Pacific Grove
- Palo Alto
- Paradise
- Petaluma
- Piedmont
- Placerville
- Portola Valley
- Red Bluff
- Rollingwood
- Roseville
- Ross
- Saint Helena
- San Anselmo
- San Carlos
- San Leandro
- San Mateo
- San Rafael
- Scotts Valley
- Shingle Springs
- Sleepy Hollow
- South Oroville
- Stanford
- Strawberry
- Sunnyvale
- Tamalpais Valley
- Tamalpais-Homestead Valley
- Twain Harte
- West Menlo Park
- Willow Creek
- Woodside
California- Corvallis
- Medford
- Portland
- White City
Oregon- Cle Elum
Washington
United States