Robert Irwin has shared a heartbreaking update about his beloved dog Stella, revealing his sweet companion has been diagnosed with cancer.

The wildlife warrior is currently in the US competing on Dancing With The Stars and said being away from Stella — who remains in Australia — has made the news even harder to process.

“I wanted to give an unfortunate update on my sweet little pup, Stella,” Robert posted on Instagram on Sunday.

“A mass was discovered that ended up being cancerous.

“We still don’t know the full extent of the cancer. I have faith she’ll be in the clear.”

Alongside the emotional post, Robert shared black and white photos of Stella, who he described as “such an important part of our little fam.”

Robert frequently features Stella on his social media and the pug even ha

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