No specific info about version 2.1. Please visit the main page of Coloring Book - ZOO on Mac Informer.
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Amju Pet Zoo is a nice game for kids in which they own a small zoo.
eMagic Coloring is a magical coloring book that allows young artists to paint.
FRS Coloring Book is a very simple coloring application for kids.
3 Days - Zoo Mystery is a nice hidden-object game.