Let's face it, Sir David Attenborough is not just a national treasure but the nation's granddad – so anything that upsets him, upsets us too.

The BBC legend, who recently signed a mega-deal to host a show on conservation with Netflix, has condemned Bear Grylls for killing animals for the sake of entertainment.

Speaking to The Sun, he said: "We've never killed an animal. Bear Grylls will have to answer for himself.

"But I wouldn't willingly kill an animal just to get a shot."

It comes after Celebrity Island with Bear Grylls came under fire by animal rights charity PETA when footage of celebrities killing a caiman crocodile was aired in September last year.

The Channel 4 survivalist series saw Olympian Iwan Thomas and former Coronation Street actor Ryan Thomas wrestle with a crocodile before killing it with a knife.

Channel 4

The brutal scenes attracted 11 Ofcom complaints and led the director of PETA UK to condemn the "miserable celebrities and producers" for allowing the events to occur.

Channel 4 responded to the complaints, insisting that it was an adult caiman that was killed, despite PETA's claim.

"An important part of the series is to find out if the celebrities are capable of surviving alone and able to find sources of food, including hunting and killing for meat; a vital part of their survival as it is a source of valuable calories and protein," said a spokesperson.

"The celebrities were trained in the humane capture and dispatch of live animals as part of their survival training and the adult caiman was killed humanely."

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