Today's a big day for the gorillas. Their old exhibit is being torn down in preparation for a new gorilla rainforest and they have to move into a temporary home. It will be up to the keepers, Vanessa Phelan and Dianne Devison, to convince them that their new home is safe -- and gorillas hate change. Now that the Siberian tigers, Tonghua and Tatiana, are acquainted, it is time to make tiger babies. Today Tatiana is in heat and Tonghua is re-introduced to her. The keepers must still be on alert just in case Tonghua, a very powerful 500 pound Siberian tiger, decides he would rather make war than love. Carter is a mandrill, a forest baboon. Poor Carter is stuck in the health centre because he is due to be shipped to the Detroit Zoo and has to be kept in quarantine until his papers come in from the U.S. government. For his keeper, Eric Cole, this poses a problem. How do you keep a bored primate busy?