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 7 of 7 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 7 Previous Next Start Slideshow Twitter ReactionsDogPets