My first key book. Where is the little baby monkey?

Where on earth has Kiko the baby monkey gone? Naila the monkey mom sets off in search of him. Could he be hiding in the monkey house? Or with the hippos? Naila checks every enclosure. But watch out: the heavy doors can only be opened with the key. And for that, the monkey mom naturally needs the energetic little hands of the children.
A beautifully designed "peek-a-boo" book that also trains fine motor skills.