Taking to Instagram at the weekend, the 68-year-old TV star uploaded a wholesome throwback snapshot of himself cuddling his family's pet golden retriever called Ned.
Monty was pictured beaming from ear to ear as he bonded with the sweet pup. Captioning the image, the father-of-three simply penned: "A year ago today."
Evidently delighted by Monty's heartwarming photo, fellow dog lover James, 36, commented: "Wonderful," followed by a bright red heart emoji.
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A second follower remarked: "Sweet adorable Ned, this past year he has grown up so quickly, thank you Monty for sharing his story with us," and a third added: "He's beautiful, I've enjoyed watching him grow on @gardenersworldtv."
Aside from Ned, Monty and his family share two other dogs: a golden retriever named Nell, and a Yorkshire terrier named Patti. Their latest addition to the family came two years after the author's dog called Nigel sadly passed away after suddenly falling ill.
At the time, Monty paid tribute to his "old friend" on social media, explaining how his furry friend had been "happy, healthy and his usual calm, lovely self" right up until the end.
In the past, Monty has openly spoken about the close bond he shares with his canine clan. On his website, he writes: "I have lived with dogs all my life and so it is absolutely natural to me that wherever I am in the garden I should be accompanied by a dog or two… It is their garden as much as mine or any other members of the family."
"Something that I take for granted is that, by and large, they do absolutely no damage and respect the garden completely," he continued. "They (rarely) dig holes or crash through the flower beds. They do treat the long paths as bowling alleys down which they career in chase of the ball that we are obliged to throw, but it is harmless enough."
Princess Kate's brother, James, similarly adores spending time with his beloved furry companions. The entrepreneur, who is expecting his first child with his wife Alizee, frequently delights fans on social media with adorable photos of his pet dogs: Mabel, Zulu, Inka, Nala and Isla.
He was nonetheless left heartbroken at the start of this year following the devastating death of his therapy dog, Ella.
Ella had been by James's side for 15 years, and was a canine companion he credited with saving his life when he was facing battles with depression.
In a touching tribute shared to social media, he penned: "It is with great sadness that I announce my dear Ella has passed away. For 15 years Ella has been at my side, from my darkest days to my happiest. I'm going to miss her terribly.
"Ella had a very short illness, she slipped away in my arms at home and is now buried in the garden alongside Tilly. I took this picture just a few hours before she died."