London, who went so far as to fight for custody of one of his own dogs, understood that loyalty between dogs (particularly working dogs) and their masters is built on trust and love.
自分の犬の保有権について争議まで起こしたロンドンは、信頼と愛が犬（特に使役犬）とその飼い主の間の忠誠心を作ることを知っていた。