King Charles and Queen Camilla announced Monday, May 11. 18 that they are mourning the lost of a "much-loved" family.

The couple shared the post to the Royal's Instagram account, writing: "The sad farewell to Beth, the Queen's beloved companion at @Battersea Dogs and Cats Home, brought such joy, whether it was walkies or official duties, curled up with fire.

People reported that Beth "had an untreatable tumor and had to be put down over the weekend."The rescued Jack Russell terrier, who joined the royal family in 2011, is survived by another Jack Russell, the Bluebell.

Queen Camilla has been patron of the Battersea Dog and Cat House in London since 2016 and adopted both dogs from the shelter. Beth took part in the unveiling of a special plaque at the organization in 2020 — as shown in a video shared by the royal couple in an Instagram post - removing the blue curtain with her teeth as Camilla (and the rest of the crowd) happily watched.

In tribute to Beth, the king and Queen also shared several photos of themselves with the puppy, including a particularly sweet photo of Camilla's 1st man strolling through the countryside with his beloved companion and Beth touching his nose with King Charles.Beth also shared a photo of his family with his family, he shared a photo of his family, shared a photo of his family.

Another adorable snapshot shows Beth and Bluebell wearing matching blue bandanas in honor of the organization that found the house.

Dozens of fans, including Battersea dogs and cats, sent condolences to the post. "Thanks for giving Beth the most wonderful life and always supporting the rescue. Rest in peace Beth" the charity commented.

Battersea also posted its own memorial, saying: "It is so sad to hear that Beth, the Queen's rescue dog, has sadly passed away. His Majesty, our patron, rehomed Beth from Battersea in 2011 and has many memories of Beth visiting our centre over the years. Our thoughts are with Their Majesties at this time. We know how hard it is to lose a beloved pet, and Beth was certainly very special. 💙"