Change Dino-Poo Into Rocks:
     Name an exhibit Copralite Corner, all dinosaur poo turns into rocks

Change Dinosaur Egg Contents:
     Name a scientist Dr. Frankenstein and there's a 10% chance an egg
will change its contents when the scientist visits.

Extra Money:
     While  you're  playing in a game, press the Shift key + the 4 key
($) to get more money.

Secret Unicorn:
     When  selecting  exhibit  name  type Xanadu in its place. Unicorn
will then appear in animal menu.

Unlock All Dinos:
     Just name a guest DINOMAN.

Unlock Deinosuchus:
     To  unlock  the Deinosuchus (a very large Jurassic alligator)just
complete  all  the  scenarios  and after you complete the last one you
will get a message saying you got it.