I doodle a lot when i'm in class, most of the time it's animals in general (or trees, I love drawing trees).
And I found a Raelyn doodle in the middle of an entire page of notes that had succumbed to a little bout of doodleitis.

In this pic I added a lot of solid coloring to emphasize the spade shape on her back. Her front leg is a little wonky, but hey I was supposed to be listening to my professor. She is also cut off by the edge of the paper.

*note* I do pay attention during my classes, I'm just one of those people that does best at remembering information when I'm not writing it down.