Robert and Terri are currently living in Los Angeles, California while Bindi competes on the show, and Robert recently opened up to ET about how different life in L.A. is from back home, where the family live on the grounds of Australia Zoo.
"Well in Australia, we literally live inside of a zoo," he said. "So, we've grown up in a zoo and every morning we wake up to the sound of tigers roaring, and lemurs scratching. And it's such an incredible experience."
PHOTOS: The Irwin family
Meet Robert Irwin, Bindi's animal-loving little brother
SUNSHINE COAST, AUSTRALIA - NOVEMBER 15: Bindi, Terri and Robert Irwin attend the official launch of the Australian Wildlife Hospital at Australia Zoo on November 15, 2008 on the Sunshine Coast, Australia. The opening ceremony timed to coincide with the second annual Steve Irwin Day celebration realised Steve Irwin's dream to establish the world's largest wildlife hospital to honour his mother Lyn Irwin who had been a pioneer in wildlife care in Queesnalnd, Australia. The new hospital is also a living memorial to Steve Irwin. (Photo by Lisa Maree Williams/Getty Images)
SYDNEY, NSW - OCTOBER 11: (L-R) Terri Irwin and daughter Bindi Irwin arrive on the orange carpet at the fourth annual Nickelodeon Australian Kids' Choice Awards 2006 (NSW) at the Sydney Entertainment Centre on October 11, 2006 in Sydney, Australia. Bindi is presenting an award on behalf of her late father, Steve Irwin. (Photo by Kristian Dowling/Getty Images)
BEERWAH, AUSTRALIA - SEPTEMBER 20: Terri Irwin (C) wife of Australian environmentalist and television personality Steve Irwin, sits with daughter Bindi and friend Wes Mannion (R) at the Steve Irwin memorial service at Australia Zoo September 20, 2006 in Beerwah, Australia. Steve Irwin, known as the crocodile hunter, died after being stung through the heart by a stingray whilst diving off Port Douglas in the north of the Australian state of Queensland. (Photo by Dave Hunt/Pool/Getty Images)
SUNSHINE COAST, AUSTRALIA - DECEMBER 14, 2002: (EUROPE AND AUSTRALASIA OUT) 'Crocodile Hunter' Steve Irwin with his wife Terri Irwin, and daughter Bindi Irwin, and a baby crocodile at Australia Zoo in Queensland. (Photo by Newspix/Getty Images)
SUNSHINE COAST, AUSTRALIA - NOVEMBER November 20, 2003: (EUROPE AND AUSTRALASIA OUT) 'Crocodile Hunter' Steve Irwin, who is Queensland's Australian of the Year 2004 state finalist, is congratulated by his daughter Bindi Irwin and wife Terri Irwin at Australia Zoo. (Photo by Newspix/Getty Images)
Steve Irwin, Terri Irwin & daughter Bindi Irwin during 'The Crocodile Hunter: Collision Course' Premiere at Arclight Cinerama Dome in Hollywood, California, United States. (Photo by SGranitz/WireImage)
Steve Irwin, Terri Irwin & daughter during 'The Crocodile Hunter: Collision Course' Premiere at Arclight Cinerama Dome in Hollywood, California, United States. (Photo by SGranitz/WireImage)
Steve Irwin with wife Terri Irwin and daughter Bindi Irwin (Photo by Justin Kahn/WireImage)
Steve Irwin, Terri Irwin, and daughter (Photo by Ron Galella/WireImage)
SUNSHINE COAST, AUSTRALIA - 1993: (EUROPE AND AUSTRALASIA OUT) 'Crocodile Hunter' Steve Irwin and his wife, Terri Irwin, and 'Jonathon' the Green Iguana at Australia Zoo in Queensland. (Photo by Newspix/Getty Images)
Steve Irwin, Terri Irwin & daughter Bindi Irwin at the Arclight Cinerama Dome in Hollywood, California (Photo by Steve Granitz/WireImage)
Steve and Terri Irwin with their daughter Bindi during 2002 ShoWest Opening Day Luncheon at Paris Hotel in Las Vegas, Nevada, United States. (Photo by Denise Truscello/WireImage)
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That's not to say there isn't any wildlife in L.A., Robert assured.
"We have the hummingbirds which have been coming to our veranda, and we found woodpeckers and squirrels," he said. "So it's not quite tigers but it's still a lot of fun."
Robert was just two years old when his father, Steve Irwin, passed away, but the family says they keep his memory alive with home movies and stories.
"We always tell stories and we watch Dad's DVDs," Bindi said. "And mom was so kind to take so many home movies, so we have all these home movies that we watch. It's those memories that just mean the most and it's focusing on all the happiness and good times that we had, and that we shared."
"We're also very lucky because through all of dad's amazing documentaries we basically have our life on TV," Robert added. "So all we have to do is put the DVD in the DVD player and rewind and press play and we can relive these amazing memories. So we are very, very lucky in that respect."