Terri Irwin: Robert Is Nothing Like Steve

has revealed the major difference between her late husband, 'Crocodile Hunter' Steve Irwin, and their son Robert.

'I will say that the thing that Robert's got that Steve didn't: Steve never took his shirt off for wildlife,' she joked with Robert at the Steve Irwin Gala this month, according to Yahoo Lifestyle Australia.

Robert cheekily replied, 'Whatever gets the job done.'

Terri, 61, appeared to be referring to Robert's notorious 'thirst trap' underwear campaign. 

The TV host almost broke the internet in April last year after posing in a series of steamy snaps promoting Aussie underwear brand Bonds in the US. 

Robert has continued to flaunt his buff physique since, including appearing in a shirtless salsa routine seen on  US last September.

Elsewhere at the charity event, which raises money for wildlife conservation, Terri

'It was a lot of work, it was a lot of grief. There were times of great joy,' she said. 

'And to be able to have shared that with him was incredibly special - and carry it on,' Terri added. 

While building a high profile as a mainstream TV presenter in Australia as co-host of 'I'm a Celebrity...Get Me Out of Here', Robert

Terri and Steve's daughter, Bindi Irwin, 27, and her husband, Chandler Powell, 29,

Steve Irwin's family continued his life's work after the celebrity conservationist while filming underwater in 2006.

It comes after Robert Irwin's Dancing with the Stars spin-off wrapped filming in Brisbane last month.

And insiders now say that Terri was a surprising 'no show' while the reality dance competition was still in production.

Terri built a reputation as a 'helicopter mum' after staying close to Robert behind the scenes as her beloved son filmed the last two seasons as co-host of I'm a Celebrity...Get Me Out of Here.