Although a number of presenters fronted the show, it is Johnny Morris that most people remember as being its star.

Dressed as a zookeeper, he entertained children and adults alike, adopting an anthropomorphic approach - creating different voices for the animals. He was an instant hit and made stars out of Dotty the Lemur et al.

Joining Johnny over the years were Tony Soper, naturalist Gerald Durrell and Terry Nutkins.