In loving memory of little Lightweight, the pigtail macaque who captured so many hearts, including that of his rhesus monkey friend Vera Wang. He had a fighting spirit and a friendly, outgoing personality. He also had chronic diarrhea, and was killed on August 29, 2001 after 17 months of life. Lightweight, in our hearts we know it’s better that you did not suffer a long life in biomedical research, but we miss you anyway.