Original robots Sir Killalot, Matilda, Dead Metal and Shunt are back for the rebooted series presented by Dara Ó Briain and Angela Scanlon

As the human world gathers to stage the Olympic Games, this programme looks at what would happen if animals were to do the same. Competitors from the mammal, bird, insect, reptile and fish nations are scaled to human size as they compete in Olympic events. On screen BBC sport graphics impart facts and figures, with commentary from John Motson and Jonathan Pearce.