By A Mystery Man Writer
Boo, the famously cute dog, has died 'of a broken heart' - Yahoo Sports
World's Cutest Dog, Boo Dies Due to Heart Issues, Owners Say he Was Broken After His Companion Buddy Died
World's cutest dog' Boo died of a broken heart, his owners say
People Are Saying Goodbye To Boo, World Cutest Dog, Who Died Of a Broken Heart - I Can Has Cheezburger?
Boo the Pomeranian dog dies 'from a broken heart
World's Cutest Dog' Boo Died Of A Broken Heart, His Owners Say
World's cutest dog' Boo dies 'from broken heart', US News
Boo the Pomeranian dog dead: Social media star dies from a 'broken heart', London Evening Standard
World's cutest dog dies of heartbreak - Vanguard Allure