...Cartoons are not child pornography because no one has been exploited. I have to wonder why you want to confuse the definition of "child pornography" according to the law. A cartoon of murder is not murder, but the person depicting the cartoon merits further consideration. A cartoon of sodomizing babies is not child pornography, but it merits further consideration. The person with a sick mind has not necessarily committed a crime (unless your name is Ernst Zundel). Prosecutors are not exercising judgment when they don't prosecute someone, they're exercising judgment when they do prosecute someone.
Ignorance of the law is no excuse. Child porn includes depictions of children in sexual situations. A cartoon is a depiction.
Under the Criminal Code provisions in Canada, material that shows someone who is or is "depicted as being" under 18, and is engaged or "depicted as engaged" in explicit sexual activity, is classified as "child pornography"...
...The penalty for making or distributing child pornography is up to 10 years in prison. Possession or "accessing" carries a potential sentence of up to 5 years....
http://en.wikipedia.org/wiki/Child_pornography#Canada
de·pict
–verb (used with object) 1.to represent by or as if by painting; portray; delineate. 2.to represent or characterize in words; describe.
Depictions can have serious consequences. For example:
More Than 1,000 Protest Cartoon Depiction of Prophet
by Kareem Fatim
The New York Times
More than 1,000 Muslims gathered yesterday for a rally and prayer session across the street from the Danish Consulate in Manhattan, protesting cartoons of the Prophet Muhammad that have set off a series of violent demonstrations around the world since their first publication in Denmark....
...We were tired of demonization," said Dr. Shaikh Ubaid, a spokesman for the Muslim Leadership Council, which organized the rally. "There is a rise of Islamophobia in Europe. More and more Americans think negatively about Islam." The depiction of the prophet as a terrorist mirrored insults that in the past were heaped on other immigrant populations here, including blacks, Jews and Native Americans, he said...
http://pewforum.org/news/display.php?NewsID=10029
Possessing a cartoon depiction of child porn could potentially result in five years in prison. Doodling a child porn depiction, even a bad one, and passing it on to someone could result in 10 years incarceration.
I disagree with this part of Canada's child porn law for similar reasons why I disagree with the way many Muslims reacted over depictions of the prophet.