This has got to be one of the best Mr Moo finds so far!  Its a book by Margaret Wild and Illustrated by Jonathan Bentley.

It’s a childrens book aimed at readers ages 3 - 5 years, first published in 2004.   It is sub-titled ‘How do you do?  I’m Mr Moo!’

Mr Moo The Book

Here is an overview of the book:

Mr Moo lives a happy quiet life. He has a lovely house, a garden, a shed to tinker in and even a river with its own island. But now and again, Mr Moo wishes he had a friend to share things with. Then Mr Moo meets an adventurous duck named Jimmy Johnson, and his quiet life becomes filled with excitement!

Source:  AllenAndUnwin.com