Henry Cavill and his girlfriend Natalie Viscuso are celebrating a milestone birthday in the household!

The couple posted tributes in honor of their pet dog Baggins on Instagram Sunday as they marked the pooch’s first birthday.

“Happy Birthday, Baggins!” Cavill, 40, wrote in the caption to his post as he shared a joint selfie of him with Baggins and his other pet dog Kal.

“There was a time, not so long ago, when Kal used to live in peace,” he continued. “Alas, he’s now one friend richer, but uninterrupted naps are never assured.”

Cavill was seen in the cute snap leaning over in an armchair as he took the photo with his dogs, who stood beside him. Baggins looked at big brother Kal wide-eyed in the shot as he raised his paw, while Kal licked his lips.

The Witcher star also shared an adorable photo of Baggins as a newborn puppy, and others of him getting bigger and bigger in the following months. In another cute snap, Baggins snoozed as he lay on Viscuso’s lap outdoors.

In her tribute to Baggins, Viscuso wrote on Instagram, “Hard to believe this guy is already a year old! Lookin’ like a proper gent from the very beginning. #birthdayBaggins.”

Alongside her message, she shared a heartwarming throwback photo of Baggins wearing a checked dog jacket as he stood on a grassy lawn.

Cavill and Viscuso confirmed their relationship on Instagram in April 2021as the pair posted a photo of them playing chess together. The couple made their red-carpet debut at the New York City premiere of Cavill’s Netflix sequel film Enola Holmes 2 in October 2022.

In January, Viscuso continued to support her man during the promotion of his most recent film Argylle. The couple made several red-carpet appearances together during that month at the premieres of the film in Seoul, South Korea, and London.

Cavill and Viscuso, who is a television executive at Vertigo Entertainment, revealed they are collaborating together on an adaptation of Warhammer40,000 in December 2022.

Speaking about the partnership in an Instagram post, Cavill called it “a blessing beyond words, [as] without her we might not have found the perfect home at Amazon.”