Zoo Tycoon 2 - Extinct Animals

Submitted by: RM

Quagga:
-------
Release all extinct animals into the wild to unlock the Quagga.

Lab accident animals:
---------------------
Get an animal creation mini-game score lower than 50\% to 
unlock one of the following animals:

Giant Bullfrog 
Giant Monarch Butterfly 
Killer Penguin 
Red Squirrel 
Springhare 

Note:
-----
Except for the Killer Penguin, all of these animals are just 
selectable ambients.