
Allan W Janssen is the author of The Plain Truth About God at http://www.god-101.com/ and the blog "Perspective" at http://god-101.blogspot.com/

study with humans first. 
After a few days, or even weeks, another study group will be subjected to the same thing while the old group is questioned on improvements or changes that have to be made to ensure the animals will live a stress free life while in captivity.
Zoo Director Dr. Emile Huk-Huk, in an interview at the start of the study, explained that thinking has changed about keeping different species in captivity and the welfare of the Zoo's "Guests" is of the utmost importance, hence the need for study!