Summer Special 2017 Episode 5

The penguin keepers embark on their most ambitious project ever - an underwater feeding machine to encourage their birds to hunt for their breakfast. Jean Johansson discovers how wolves like to bury their food so they can come back to eat it when they are hungry. Meanwhile, Ben Fogle and Kate Humble meet a new creature at the park - and it is the male, not the female, which gives birth to their young. And a hyrax is rushed to the vet for some emergency dental work, but having never treated one before, have the team bitten off more than they can chew?