Brian Kelley and his wife, Brittney, are mourning the loss of their German shepherd, Sage, who crossed the rainbow bridge this week.

The couple shared the heartbreaking news on social media.

“Sage got her wings. She gave us 12.5 of the best years!!! What a dang great family member!! She lived like a rockstar, multiple tours across the country, spent time in Nashville & Florida and @brittneykelley right hand girl,” Brian wrote. “Sweet as could be, but a protector and ready at the drop of a hat. Job well done girl!! I know you’re up in Heaven Sagey Boss and I can’t wait to play again!!”

Brian’s post included a number of photos of Sage over the years.

Brittney also shared her own tribute, which revealed that they weren’t originally supposed to have her but welcomed the dog into their home after her previous owner was unable to care for her.