Jessica Chastain in a still from 'The Zookeeper's Wife'

Much has been spoken about Jessica Chastain's dedication when it comes to her work. The Academy Award nominee has been basking in the glory of the success of her movie 'The Zookeeper's Wife', but not to forget the hard work the talented actress put in the making. As we know, the movie is based in a Zoo in Warsaw, it required lot of animal cast to look like an active Zoo.