Though Whisper's death marks the end of an era, it can certainly be said that the Queen's corgis lived the most lavish and well-loved of canine lives, from their homemade meals prepared by the Queen's chefs to the stockings she reportedly fills for each dog at Christmas.
"Whisper was a friendly chap and followed her everywhere", a source told the paper. "She didn't want to leave any young dog behind".
The last dog favorite breed of the British Royal family - Welsh-Corgi - died at Windsor castle.
Bill's wife, Nancy, who passed away three years ago, was the keeper of the Queen's corgis and The Queen "couldn't resist" taking in the couple's beloved dog.
Her offer to take in Whisper was seen as returning the favour.
The 12-year-old had originally been called Wispa after the chocolate bar but the Queen was said to have found that "too obscure" and she changed to the regular spelling.
The Queen was given her first dog, a Cairn terrier, at the age of three by her uncle, the Prince of Wales.
Buckingham Palace refused to comment.
"Her main fear is that if she fell and broke her arm or even a leg she would not be able to perform her duties for many weeks if not months, and that would upset her greatly".
According to the Mail, the Queen made a decision to stop breeding corgis five years ago over fears she could trip over an excitable puppy, adding to her concerns over who would take care of them when she was no longer around.
Her Majesty has kept corgis by her side since 1933 but the death of Whisper brings the 85-year tradition to an end.
It's been a tough year for the 93-year-old monarch, who also laid to rest her dog Willow earlier this year. It is probably because Willow was the last link to her parents and a pastime that goes back to her own childhood.