'I want (Bindi and Robert, 15) to be able to do what they want from day to day, enjoy life, enjoy the animals, achieve things, without worrying about things that should never be presented to them (like that article),' says Bob.
'Much the same as any other parent or grandparent, I would wish (Bindi and Chandler) all the best - which I do - and hope things go really, really well.'
Bob - who resigned from Australia Zoo two years after his son’s death in 2008 - says he hasn’t seen his grandchildren for over a decade, but is always there if they need him.
'Both Bindi and Bob have achieved a lot in a short space of time; mind you, they’re both only young yet … But they’ve done well and … I would say Steve would be pretty happy with the way they’re going.'
WATCH: Bindi Irwin announces engagement to Chandler Powell
