RaeLynn's diabetes service dog, Jazz, has been crucial to her well-being. Now, it's him who needs her. The singer shared with fans on Tuesday (Aug. 14) that Jazz has cancer.

“Asking all of you to pray for my Jazz," RaeLynn writes alongside a sweet pic of the two of in bed together. "He got diagnosed with Cancer 2 weeks ago. We removed it but it’s growing pretty fast. I’m praying for a complete healing in his body. He brings so much joy to me and Josh’s life. I am beyond sad but I truly believe in miracles."

The German Shepherd — her dog of more than two years — is more than a pet and family member, as RaeLynn has long relied on him as a service dog.

"Jazz is my therapy dog, and for years he has been by my side and traveling all over the country," RaeLynn told Taste of Country earlier this year after she and Jazz encountered trouble on a flight. "In terms of my diabetes, he is there to detect when my sugar levels aren’t right. He goes everywhere with me."

Jazz's cancer diagnosis comes at a time when RaeLynn has been enjoying a summer of highs — she recently released a new song called "Tailgate," which she wrote with Canaan Smith, Corey Crowder and Florida Georgia Line's Tyler Hubbard.

"Lately when it comes to songwriting, I’ve made it a point to just have fun and create music that feels good," she explains in a press release about the song. "Without fail, 'Tailgate' makes me want to dance on stage every single time I perform it and when you hear it you can’t help but sing along."

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