Did humans domesticate cats, or did they decide to keep us as pets? And where are all the Christmas Beetles?

Catriona investigates the origins of cat people, or more specifically where and when did cats become domesticated. And also, whether they are truly domesticated at all. Chris looks at a favourite insect, the colourful and seasonal Australian Christmas beetle, which many people think is disappearing, but a national citizen science project aims to keep tabs on the flying baubles.