The State of California requires that all dogs over the age of 4 months to be licensed in the area that they live. Fees are less for dogs that have been altered (spayed/neutered). Registration is not required for cats.
Pleasanton
http://www.cityofpleasantonca.gov/gov/depts/os/service/petlicense.asp
(925) 931-5425
3333 Busch Road, Pleasanton
Mon. – Fri. 7:30 AM – 3:30 PM
Fees (vary by license duration and animal): $3.50 – 18
Contra Costa County (Antioch, Brentwood, Clayton, Concord, Danville, El Cerrito, Hercules, Lafayette, Martinez, Moraga, Oakley, Orinda, Pinole, Pittsburg, Pleasant Hill, Richmond, San Pablo, San Ramon, Walnut Creek)
http://www.co.contra-costa.ca.us/2037/Dog-Licensing-Requirements
(925) 335-8310
4800 Imhoff Place, Martinez
Tues. – Sat. 10:00 AM – 5:00 PM
Fees (vary by license duration and animal): $20-110
Livermore
http://www.cityoflivermore.net/citygov/admin/finance/services/dog.htm
doglicense@cityoflivermore.net
(925) 960-4315
1052 S. Livermore Avenue, Livermore
Monday to Friday 8:00 AM to 5:00 PM
Fees (vary by license duration and animal): $2.75 – 29.50
Dublin
http://dublinca.gov/index.aspx?NID=96
(925) 803-7040
4595 Gleason Dr., Dublin
11:30 AM – 5:30 PM – 7 Days a week
Fremont
http://www.fremontpolice.org/index.aspx?NID=331
AnimalServices@fremont.gov
(510) 790-6644
1950 Stevenson Blvd., Fremont
Tuesday – Friday: 9:00 AM – 12:00 PM, 1:30 PM – 4:00 PM
Newark
http://www.newark.org/departments/police/operations/animal-services/
finance@newark.org
510-578-4310
License/Cashier Counter, First Floor, City Administration Building, 37101 Newark Blvd., Newark
Fees (vary by license duration and animal): $7 – 46
Union City
https://www.unioncity.org/179/Dog
(510) 675-5312
Animal License Department, 34009 Alvarado-Niles Road, Union City
Fees (vary by license duration and animal): $14 – 59