The Irwin Family — Terri, Bindi and Robert — sits down with ET’s Denny Directo in Las Vegas ahead of the annual Steve Irwin Gala, which supports lifesaving treatment to wildlife impacted by road traffic accidents and domestic animal attacks in Australia. The family, who help run the Australia Zoo, reflect on their late patriarch’s legacy and dream-cast a ‘Crocodile Hunter’ biopic and react to Robert following in his big sister’s footsteps as a contestant on the upcoming season of ABC’s ‘Dancing With the Stars.’