Boo the Pomeranian: World’s Cuttest Dog Dies from Broken Heart at 12

World’s cutest dog Boo the Pomeranian has died from a broken heart at the age of 12.

The social media star’s owners say he had shown signs of heart problems ever since his “best friend” – a dog called Buddy – died in 2017.

“We think his heart literally broke when Buddy left us,” they wrote on Boo’s official Facebook page.

Boo had 16 million followers on Facebook, made TV appearances, and even released a book called Boo – the life of the world’s cutest dog.

Boo and his friend Buddy had lived together for 11 years – before Buddy passed away in September 2017 at the age of 14.

His owners say Boo passed away in his sleep on January 19 and they were “heartbroken”.

They added: “But we find comfort knowing that he is no longer in any pain or discomfort.

“We know that Buddy was the first to greet him on the other side of that rainbow bridge, and this is likely the most excited either of them have been in a long time.”

As well as releasing a book, Boo met with celebrities such as Seth Rogan, became an ambassador for a US airline and appeared on several TV shows.

Boo’s owners said they’d received many notes over the years from people sharing their stories of how Boo “brightened their days and helped bring a little light to their lives during difficult times”.

They added: “And that was really the purpose of all this…Boo brought joy to people all over the world.”