Why do elephants have trunks? How did whales evolve from land mammals? What is a giraffe鈥檚 long neck for?
These are just some of the questions a new Channel 4 documentary series will attempt to answer with the help of CGI, wildlife photography and the first ever televised dissections of a whale, a giraffe, a crocodile and an elephant.
See a selection of images from the programme, described by , an expert in comparative anatomy who worked on the programme.
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Inside Nature鈥檚 Giants airs in the UK on 29 June at 9.00pm on Channel 4.
