Snoopy in a bad mood

I will explain this movie.
First, Snoopy is reading at the library. He burst out laughing and he was very noisy. He was through out of there. There was a signboard in front of the library and it said that NO DOGS ALLOWED IN LIBRARY.
Next, Snoopy saw a boy called Linus. Linus always has his blanket. Snoopy teases him for his blanket, and Snoopy and Linus fought for the blanket. Linus started crying and Snoopy could not get it so he got angry.
Finally, Snoopy saw a girl called Lucy. She is strong-minded and she were boxing. Snoopy challenge her to fight with him and they started to fight. Snoopy is very strong and Lucy gets irritated.

http://www.youtube.com/watch?v=gKxXAwBRuVo