Julia discovers how everything from sheep's skin to its placenta can be used to help create boots, cosmetics and condoms.

Julia discovers how the inedible parts of a cow can be used for different things including luxury car seat covers, tennis rackets and posh plates.

In this programme, Julia discovers how the humble pig can provide everything from shoes and hairbrushes to sweets and vital medical parts.

In this episode, Julia discovers how fish and seafood end up inside everything from hairspray and beer to perfume and guitars.

In this concluding programme, Julia revisits her highlights from the series and discovers which animal part is used to produce our bestselling books.