December 1, 2015 11:26 pm ‘Tonight Show': Yahoo! Answers Lounge Singers with Seth MacFarlane “Tonight Show” host Jimmy Fallon and Seth MacFarlane sing replies to real Yahoo! Answers questions like, “Can a veterinarian tell how many lives a cat has left?” US & World Videos 1:14 Prince Harry photobombs Meghan Markle's selfie in Nigeria 4:41 How ‘Bachelorette' Hannah Brown knew fiancé Adam Woolard was the one 6:04 Matt Rife reveals wildest gift a fan gave him 7:23 Chrissy Teigen gets ‘sentimental' gift from John Legend every year 2:36 Mandarin immersion program gaining popularity in Orange County