Robert Irwin isn't just known for his raunchy appearances on Dancing With The Stars , like his famous father Steve, the Australian star is an avid animal lover. Although he's extremely close to his mother Terri and sister Bindi , there's one particular member of the family he's incredibly fond of. Posting on Instagram over the weekend the Australian Zoo member shared some heartbreaking news on his beloved pup Stella.

"This is a tough one. I wanted to give an unfortunate update on my sweet little pup, Stella. A mass was discovered that ended up being cancerous," he shared. "We still don’t know the full extent of the cancer. I have faith she’ll be in the clear.

"She is such an important part of our little fam, so it’s been stressful to say the least being away from home and away from

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