Jesse Tyler Ferguson is mourning the loss of his canine co-star. 

On Saturday, Beatrice the Frenchie, who played Stella on Modern Family, passed away, just weeks after filming wrapped on the final episode of the hit ABC comedy. A spokesperson from Good Dog Animals agency, which represented Jay Pritchett's (Ed O'Neill) scene-stealing French bulldog, confirmed to E! News that she died after going into cardiac arrest. 

"It is with our deepest regrets to inform you all that we have lost our beloved Beatrice," the statement said. "Last Saturday, she was rushed to the emergency room. She had fluid around her heart which was compressing down. The cardiologist went to remove the fluid and she went into cardiac arrest. They started CPR but they were not able to revive her." 

The spokesperson continued, "We are heartbroken and devastated. It was way too soon, but [we're] happy in knowing how many lives she has affected. We are so grateful to know that she has so many fans that embraced her with such love and support. She will be with us forever. She is the Modern Dog." 

After learning of Beatrice's passing, Jesse took to social media to express his condolences. "Rest In Peace sweet Beatrice," he shared on Twitter, along with a photograph of him and his husband Justin Mikita with the precious pup on the Modern Family set. "We love you so much."

Just three weeks ago, Beatrice got a sweet shout-out on the show's Instagram account in honor of National Pet Day. The post read, "Stellaaaaa, we love you! Happy #NationalPetDay."

With the Modern Family series finale less than one month away, Jesse explained that it's been difficult to come to terms with the Emmy-winning sitcom ending after its epic 11-year run. 

"It's a very emotional. I'm open to any advice you give me because I'm really not dealing with it in a great way," he told Sean Hayes during his visit to The Ellen DeGeneres Show back in February. "I think I'm, like, repressing my feelings about it. It sneaks up in weird ways…I mean, I adore [the cast] so much. It's really, really sad."

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