Instructions
Press the following sequence of buttons: "Up," "Up," "Down," "Down," "Left," "Right," "Left," "Right," "Left," "Up," "Up," "Down," "Down," "Left," "Right," "Left" and "Right." You will hear an elephant trumpet when you complete the sequence correctly.
Click on a zoo guest, and then select "Rename." Select a name from the list to unlock the particular cheat.
For the animal houses, change a guest's name to "Andrew Binder."
For the animal toys,change a guest's name to "Lou Catanzaro."
For foliage, change a guest's name to "Charlie Peterson."
To complete scenarios, change a guest's name to "Akiyama."
To increase breeding, change a guest's name to "Dr Dolittle."
To unlock all shelter, change a guest's name to "John Wheeler" or "Adam Levesque."
To get money donated, change a guest's name to "Bill Gates."
To get sick guests, change a guest's name to "Zeta Psi."
To get endangered animals, change a guest's name to "Steve Serafino."