Diddl

Today I received a letter from my French penpal,
then I realized an interesting thing.
One the letter paper that my French penpal used,
there is a cartoon showing a rat with enormous feet,
and one of my other penals (from Germany) always uses letter paper bearing the same cartoon character.
So I did a little search on the Internet,
and found that the rat is actually named "Diddl".
It is a cartoon character designed by Thomas Goletz, a German artist.
This is the official site of Diddl:
http://www.diddl.com/