Social media star Boo the Pomeranian dog has died at the age of 12. His owners say he had shown signs of heart problems ever since his "best friend" - a dog called Buddy - died in 2017.

Meet Boo the dog - a superstar among canines whose internet following is so great, he's just signed his own book deal. Five-year-old Boo has been commanding an impressive fan base ever since he ...