Pusuke, the world's oldest dog, has died at the age of 26—or 182 in dog years. Pusuke lived in Sakura, Japan, and was certified by Guinness in December of last year. His owner said he appeared to be in good health until Monday morning, when he suddenly refused to eat and seemed to have trouble breathing. He died in the afternoon, shortly after his owner came home from running errands. "I think (Pusuke) waited for me to come home,'' she said.