The Chicago Fire family is mourning the loss of their favorite canine costar, TuesdayThe Dalmatian.

Tuesday’s trainer, Christine MahaneyOn Instagram, a friend shared that the dog had died from “unforeseen kidney problems” on May 22. Christine said that she will always cherish the memories of welcoming her into their homes. Tuesday enjoyed being part of the Chicago Fire Family and loved to work on sets. She never stopped waving her tail. “She was truly special.”

Tuesday had played the dog of firefighter Darren Ritter (Daniel KyriSince season seven. The finale of season 10, which aired on May 25th on NBC, marked Tuesday’s final appearance. Chicago Fire.

Daniel posted a picture of him and his pup on Instagram with the caption, “I Love You, Sweet Girl!”

Kyri wrote to Christine a separate note, saying “Sending all her love to your 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. We love you Tues!