to name a few, you have the orangutans which seem to be enjoying their carefree lifestyle swinging from tree to tree or lazing at a corner, the leopard which doesn't stop pacing to and fro in its cage, the meerkats which are uber cute in their sentry position, the stoic zebra which looks almost statued to the ground if not for the moving tail, the white butterfly which we snapped many tens of photos of and so on.
great break from work and a good chance to put photography skills to practice!

anyway i found this photo tool (http://www.comeeko.com) which many people are using now where you can arrange your photos into a comic strip. there're also effects and dialouge/textboxes to play around with! go try it for yourself!