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The Dalmatian was known for her sunny disposition, and the cast is taking to social media to post heartfelt messages.
"Heartbroken to learn my little buddy is gone," Daniel Kyri (Ritter) wrote in an Instagram Story alongside a behind-the-scenes photo of Tuesday, People reports. "Sending all my love to her trainer today. I got to spend time with her on set & do all the fun stuff, but you took care of her when the cameras weren't rolling. Love you, Tues!"
Tuesday made her acting debut during Season 7 of Chicago Fire and remained a part of the Firehouse 51 family for four seasons. The late dog's trainer, Christine Mahaney, announced the tough news via Instagram.
"As Tuesday's trainer this may be the most difficult post I ever make. With the Season 10 finale also comes Tuesday's last episode on Chicago Fire," she wrote. "It breaks my heart to share that Tuesday passed away on Sunday, May 22, due to unforeseen kidney issues."
Mahaney's caption was accompanied by an adorable photo of the pup with her tongue hanging out, frolicking in a field of yellow flowers. Mahaney thanked Chicago Fire fans for all their love and support for Tuesday throughout the years.
"The love from you, Tuesday's fans, over the past four years has been immense," she added."Allowing her into your homes and hearts will forever be cherished. Tuesday loved working on set and being a part of the Chicago Fire family. Her tail never stopped wagging. She truly was very special."
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