Len is a member of the law firm Egert and Trakinski which specializes in animal law in New York and New Jersey. The firm represents national and grassroots animal advocacy organizations as well as individual clients in a variety of matters. Prior to starting his own practice Len was a staff attorney with the Legal Aid Society in New York City, practiced labor law and served as counsel for the Writers Guild of America, East. He is currently a member of the New York City Bar Association’s Committee on Legal Issues Pertaining to Animals and serves on the Board of Directors of Compassion over Killing.