From skateboarding dogs to chimp maths geniuses, Liz Bonnin searches for the planet's most intelligent animals, and John Humphrys puts a goldfish through its paces on Mastermind. Show more

Liz Bonnin embarks on a worldwide search for the planet's most intelligent animals. Featuring grey whales with emotions much like our own and eye-poking capuchin armies. Show more

The tigers are showing signs of territorial battles in the park’s drive-through. Will the keepers be able to stop this escalating into potentially lethal conflict? Show more

Vets are called to provide urgent care to a pregnant wolf. Can their intervention offer a sign of hope? Show more

Kate helps with the keepers' plans for a lads' day out for the lions. They are putting one of the prides into another lion’s territory in an attempt to analyse the current pride structure. Show more

There’s some unexpected behaviour in Wolf Wood. Could the mother of the pack be pregnant? Show more