Who can forget the sweet photo of a 3-year-old George sharing his ice cream cone with Lupo?

But today, the Kensington Royal Instagram accountsharedthe tragic news that Lupo has died.

“Very sadly last weekend our dear dog, Lupo, passed away.

Prince William with Lupo the dog

Lupo was the son of Ella, brother to Zulu, Inka & Luna.

He was 9 years old.

Nothing can ever prepare you for the loss of a dog.

Kate Middleton with Lupo the dog

For those who have never had a dog, it might be hard to understand the loss.

He concluded with a sweet sign-off, writing, “Rest in peace Lupo.

Tilly & Mini will be waiting for you.

You will always be remembered and your legacy will live on forever.