A Campaign for a No-Kill Policy For the Nation's Animal Shelters
Richard Avanzino, former president of San Francisco Society for the Prevention of Cruelty to Animals who pushed San Francisco into becoming first no-kill city in US in which no adoptable animals were put to death, is launching nationwide campaign aimed at making every shelter no-kill within 10 years; has $200 million from Peoplesoft, $5.5 billion Silicon Valley company, to help reach goal; says society will strive to provide resources to help shelters develop goals of finding homes for every adoptable animal; photos (M)