This old building in the Amsterdam Zoo" Artis" used to house monkeys in earlier times but has been turned into a tropical habitat for small animals.
When walking around the place we didn't see any animals at all, until a nice lady who worked there pointed us at all kind of silent not moving little critters. We had to look up and saw these bats hanging.
These iguanas were hardly visible with their green colours
And what to think about this mini monkey as big as your hand.
High up against the ceiling were two other little monkeys and one behind them. They were all champions in hiding!