Female orang-utans, RoRo and Lucky are reintroduced in the hope they can learn to live together, but immediately come to blows. Big orang male, Tuan has to step in and separate them while the anxious team look on. It’s a big day for one of the park’s newest arrivals, marmoset Gizmo has been given the all clear so he can be introduced to his new house mate. While woolly monkey Carlos is at full stretch for a breakfast treat. And Alison plans a house swap between Bart’s group and the bachelor chimps, to help reduce the tension in the all-male troop.