We’re sad to learn that one of the stars of the hit Netflix series, Fuller House, has died. The doggy actor best known as Cosmo, the Fuller family dog, passed away from complications from surgery, the series confirmed on Facebook this morning.

“There will never be another quite like our boy,” the show wrote on their Facebook page just after 12 noon on Monday.

Fuller House, a reboot of the 90s sitcom Full House, first premiered on Netflix in February 2016.

During the course of the series, it was acknowledged that the character of Cosmo was the great-grandson of Comet, the Tanner family's former pet during the 90s sitcom. We don't know much about the dog's life off-screen, but Netflix wrote that the dog "grew up on our set."

Cosmo appeared in other series like The Middle and Grey's Anatomy, according to FeelingtheVibe.com. Cosmo turned four years old this May, the site reported earlier this year.

The first half of the show's fifth and final season premiered earlier this month. The second half of the show's final season is set to premiere in 2020.

You'll be missed Cosmo Fuller.