Lately I spoke with a friend about the famous German poem "Es war einmal ein Mann" (Once upon a time there was a man ..."), which evokes lots of memories for both of us. So this friend gave me this lovely book from the past which is full of wonderful poems and pictures. It also contains the mentioned poem, whose author is unknown.
The pictures are all by most famous German children's book author Janosch.
For all German speaking people: Here is an interesting YouTube video, that shows the artist's point of view about "Tigerenten".
(Werner Halle, Klaus Schüttler-Janikulla: Bilder und Gedichte für Kinder, Illustrationen von Janosch, Westermann, 1971)