Established in 1929, Humane Society Silicon Valley (HSSV) offers quality adoptions, affordable spaying/neutering, vaccinations and microchipping services, pet care services and education programs to enhance the human-animal bond. HSSV operates 24 hours a day, 365 days a year. We are the first organization in the country to meet the guidelines put forth by the Association of Shelter Veterinarians for standards of care for shelter animals: We are the first model shelter.