Popsugar Parenting Twitter Reactions Boo the Dog Dead 2019 People Are Heartbroken After the Loss of Boo, the "World's Cutest Dog" 22 January 2019 by Karenna Meredith View On One Page Photo 1 of 7 ADVERTISEMENT () Start Slideshow Boo the dog passed away and nothing even matters anymore— 기현's Raina / GA in threads!! (@gravitywoosung) January 19, 2019 Share This Link Copy ← Use Arrow Keys → 1 Previous Next Start Slideshow Twitter ReactionsDogPets