The male capuchins explore their new outdoor enclosure for the first time, Hananya shows everyone who is boss at feeding time, and baby woolly monkey Diego plucks up the courage to join his family. Meanwhile, the keepers are overjoyed to discover golden-cheeked gibbon Zoey is pregnant again.

Baby golden-cheeked gibbon Mikado ventures outside for the first time, while animal director Jeremy tries to coax overweight Oshine to the outdoor enclosure - but to get there, the reluctant orang-utan must first navigate a series of tunnels. Elsewhere, chimp Lulu refuses to take her medicine.