Jimmy Fallon April 17, 2018 3:41 am ‘Tonight': Robert De Niro Has Never Seen a Dog While backstage, Jimmy Fallon discovers Robert De Niro has never encountered a dog before. US & World Videos 14:31 @Issue extra: Seth Moulton on pro-Palestinian protests, TikTok and more 2:31 Celtics preparing for pivotal Game 3 against Heat in Miami 1:17 Patriots player visits Franciscan Children's Hospital 5:54 Pro-Palestinian protest taking over college campuses 2:47 AI pharmacist? Brigham testing new tech to assist docs, pharmacists