'My kids ask me that all the time': Prince William put on the spot by Robert Irwin in new clip

Prince William has surprised fans by appearing in one of Robert Irwin's social media videos.

The Aussie wildlife warrior filmed a new clip while in South Africa for the royal's Earthshot Prize, which Irwin is on the judging panel for.

Irwin then put the Prince of Wales on the spot by asking him a question, which the royal said his kids - Prince George, Princess Charlotte and Prince Louis - ask him regularly.

Watch the video above.

READ MORE: Royal expert reveals Kate's major step towards recovery

"I have to ask - we're in South Africa, one of the most amazing countries and continents for wildlife - do you have a favourite African animal?" Irwin asked before acknowledging "it's a tough question".

"It's a really tough question," Prince William agreed.

"And my children ask me this regularly. I think I'm gonna have to say the cheetah. I love cheetahs, fantastic animals."

Irwin appeared surprised by the royal's answer before revealing his own favourite.

READ MORE: William and Kate 'astonished' at Mother's Day photo reaction

"Very cool. It's chameleons for me, the unsung hero. I love 'em," Steve Irwin's son said.

The pair were on a hike through Table Mountain National Park in Cape Town when they decided to record the selfie clip near "the stunning Signal Hill".

Prince William also gave a glowing review of Irwin's role with the Earthshot Prize - an annual event launched by the future king in 2020 which aims to find feasible solutions to environmental issues, awarding $1 million prizes to innovations that can help curb the climate crisis.

"Having a lovely time here with Robert, who's been a fantastic ambassador for us at the moment - so looking forward to the prize," the 42-year-old said.

"I'm honoured to be part of the @Earthshotprize family, and can't wait for the awards tomorrow night," Irwin shared in the caption.

View gallery

All the defining photos of the British royal family in 2024

The wildlife warrior isn't the first Aussie to help Prince William with the awards, with actress Cate Blanchett also playing a role behind the scenes.

The Prince of Wales travelled solo to South Africa for this year's ceremony, as his wife Catherine, Princess of Wales continues her recovery after a cancer battle earlier this year.

FOLLOW US ON WHATSAPP HERE: Stay across all the latest in celebrity, lifestyle and opinion via our WhatsApp channel. No comments, no algorithm and nobody can see your private details.