Justin Theroux is mourning the death of his dog, Dolly, and it seems like Jennifer Aniston is mourning with him.

On Monday, Theroux announced the death of his beloved dog on Instagram.

“Tonight, at sunset, after a heroic struggle…our most loyal family member and protector, Dolly A. laid down her sword and shield,” the actor captioned the photo with a dog and broken heart emoji. “She was surrounded by her entire family. ‘The one that never deserts, the one that never proves ungrateful…is the dog–– faithful and true, even in death.’ -George Vest.”

He ended the caption with, “Rest In Peace Dolly.”

The photos showed the white shepherd being covered in flower petals and wrapped in a blanket. A woman’s hands can be seen in some of the photos and some people believed it belonged to Aniston.

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Theroux and Aniston shared Dolly and named their beloved pet after Dolly Parton.

Parton told E! News in 2017 that she was touched the former couple would name their dog after her.

“I’m very touched when people have known me for so long or to say that I’ve been an inspiration, but you really know when you’ve got a true fan when someone like Jennifer Aniston says, ‘I named my dog Dolly Parton. She’s got a dog, and I said, ‘Is that a compliment?'”

The former couple shared several rescue dogs over the course of their relationship. They were married in a top-secret wedding in 2015 and announced their split in 2018.