The eight year old appears to have a natural touch when it comes to his father's favourite creatures.
Steve was killed in September 2006 after getting stung by a stingray while filming in Australia's Great Barrier Reef.
He was setting up to shoot ocean reef footage at the time for a show that would include segments with his daughter Bindi.
The Irwin family have always vowed to carry on Steve's work.
Last year his 12-year-old daughter, Bindi, was promoting a new line of books in her Wildlife Adventures series.
At the time the pictures caused worldwide controversy from people who were shocked that a baby so young had been put in such close proximity to a dangerous animal.
But it seems as young Robert has grown up around the creatures, he has developed little fear for them.