Seven-year-old George, five-year-old Charlotte and two-year old Louis, whose voices are rarely heard in public, asked the 94-year-old broadcaster questions about the natural world in footage recorded at Kensington Palace last month.
Pictured in a red school polo shirt, George says: "Hello David Attenborough, what animal do you think will become extinct next?", while his sister Charlotte, in a grey school dress, reveals she likes spiders. "Do you like spiders too?," she asks.
Louis asks: "What animal do you like?"
Last month, Attenborough was pictured in the gardens of Kensington Palace after joining the young family to watch an outdoor screening of his film "David Attenborough: A Life On Our Planet."