Mamma Moo and Crow, Mamma Mu och Kråkan in Swedish, are two characters from the children's book series with the same name by Swedish writers Juja and Tomas Wieslander. 

Mamma Moo is an unusual cow who, in addition to learning crazy things, wants to be best friend with Crow. This funny duo first appeared on a Swedish children's radio program and has since won the hearts of many children.

Sven Nordqvist, also known from Pettson and Findus, was honored to illustrate the children's books. His drawings of Mamma Moo and Crow can also be found on many products that you can buy in this online store, including notebooks, posters, puzzles and more.