Photos of the major exhibits of Berlin Zoo have already been uploaded many times here on Zoochat, so I'll try to fill in some gaps by uploading photos of the less famous exhibits.
Hans im Glück is the official name of Berlin's children's zoo. It consists of a main walkthrough exhibit with African pygmy goats and Cameroon sheep and then some smaller side exhibits.
And yes, I realize that black square ain't too pretty, but Zoochat rules prohibit uploading photos of identifiable people, and it was nigh-impossible to not get such a photo.