Marvin Mackie,  DVM,  fixed more than 250,000 dogs & cats in 54-year veterinary career SAN PEDRO, California––W. Marvin Mackie,  DVM,  88,  remembered by United Spay Alliance cofounder Esther Mechler and much of the rest of the humane community as “a pioneer in the affordable spay/neuter movement,  died on September 23,  2025. “He brought so much […]