One fan took to X, writing: "I just love seeing the little family moments in this video and the singing at the end."

Another wrote: "Ooooh that’s adorable."

Expressing their love for Meghan, who claims that she has cried "too many tears to count", another fan wrote: "Awww, this is too cute! Love dogs (much, much more than cats) and I feel for anyone mourning their furry friend."

A fourth fan also commented: "Princess Lilibet's voice is so beautiful singing with mom. I only wish I could see her face. She has ginger hair color as her dad and long hair as mom."

In her dedicated post, Meghan shared how Guy had been by her side through major milestones in her life - including her career as an actress on Suits, her engagement and marriage to Prince Harry and becoming a mother to Archie and Lilibet.

Meghan wrote: "In 2015, I adopted a beagle from a dog rescue in Canada. He had been at a kill shelter in Kentucky and given a few days to live. I swooped him up….and fell in love. They referred to him as "the little guy" because he was so small and frail, so I named him "Guy". And he was the best guy any girl could have asked for."

She went on to share, "If you followed me on Instagram back in the day, you saw a lot of him - and on The Tig too.

"He was with me at Suits, when I got engaged, (and then married), when I became a mom….he was with me for everything: the quiet, the chaos, the calm, the comfort."