Various cheats
     During the game press the command below:

Cheat code:        Effect:
SHIFT+ALT+C        $100,000
SHIFT+ALT+W        Get the scenario completed
SHIFT+ALT+L        Unlock all the scenarios
Shift+Alt+R        Zoo rating will be 100
Shift+Alt+N        All animals unlocked
Shift+Alt+I        All visitors will not live in zoo
Shift+Alt+S        (Zoo Challenge only) All reaserch complete, all awards 
                   and all locked animals in your character